Shema gives the day a Torah center. A person wakes into activity, pressure, plans, and responsibility. Before he becomes swallowed by the day, he declares that Hashem is One. At night, before sleep, he returns to that same truth.

This mitzvah trains a person not to drift. Life pulls the mind in many directions. קְרִיאַת שְׁמַע — reciting Shema gathers the person back to one center: Hashem, His Torah, and His mitzvos.

Shema also brings faith into speech. A person does not only believe quietly. He says the words. The mouth teaches the heart. The heart accepts what the mouth declares.

Today, this mitzvah remains one of the most constant expressions of Jewish identity. It is said in shul, at home, in travel, in youth, in old age, and in moments of danger. Through Shema, a Jew testifies every day that his life stands before Hashem.

Rambam

• Source: Rambam, Sefer HaMitzvos, Positive Mitzvah 10; Mishneh Torah, Hilchos Krias Shema 1:1–3.
• Rambam defines this mitzvah as the command to recite Shema twice daily, in the evening and in the morning. He explains that the Torah’s phrase “when you lie down and when you rise” means the time when people normally lie down and the time when people normally rise. Rambam frames Shema as a fixed daily obligation that places Hashem’s unity, love, Torah, and mitzvos into the rhythm of every day.

Sefer HaChinuch

• Source: Sefer HaChinuch, Mitzvah 420.
• Sefer HaChinuch explains that the root of this mitzvah is to place the foundations of faith constantly on a person’s heart. By saying Shema morning and night, a Jew remembers Hashem’s unity, accepts His rule, and strengthens himself not to be pulled after the distractions of the world.

Gemara

• Source: Mishnah Berachos 1:1.
• The Mishnah opens with the time for evening Shema, asking from when one may recite Shema at night. This shows how central the mitzvah is. The entire Mishnah begins with the daily obligation to accept Hashem’s kingship in the evening.

Gemara

• Source: Gemara Berachos 10b.
• The Gemara discusses the proper time for morning Shema and connects it to the time when people rise. This gives practical form to “וּבְקוּמֶךָ” — when you rise. Shema is tied to the ordinary rhythm of human life, but it lifts that rhythm into mitzvah.

Gemara

• Source: Gemara Berachos 13a–13b.
• The Gemara teaches that a person must have kavvanah — focused intention especially in the first pasuk of Shema. This shows that Shema is not only verbal reading. It is conscious acceptance of Hashem’s unity and kingship.

Gemara

• Source: Berachos 14b.
• The Gemara teaches that one who recites Shema without tefillin is considered as if he bears false testimony against himself. Since Shema includes the mitzvah of tefillin, accepting Hashem’s unity should ideally be joined with physically binding the covenant upon the body. Shema and tefillin together express complete acceptance of עול מלכות שמים — the yoke of the Kingdom of Heaven.

Sifrei

• Source: Sifrei, Va’eschanan 34.
• Sifrei expounds “וּבְשָׁכְבְּךָ וּבְקוּמֶךָ” as the obligation to say these words when lying down and rising. Chazal anchor the mitzvah directly in the Torah’s language and show that Shema belongs to the fixed pattern of day and night.

Devarim Rabbah

• Source: Devarim Rabbah 2:31.
• The Midrash presents Shema as the great declaration of Israel’s faith. Through Shema, Klal Yisrael testifies that Hashem is One. Reciting it daily makes that testimony part of the life of every Jew.

Rashi

• Source: Rashi on Devarim 6:7.
• Rashi explains “וּבְשָׁכְבְּךָ” and “וּבְקוּמֶךָ” as the times of lying down and rising. His comment grounds the mitzvah in daily human rhythm. A Jew accepts Hashem’s rule at the turning points of the day.

Ramban

• Source: Ramban on Devarim 6:6–7.
• Ramban explains that these pesukim command constant attachment to Torah and Hashem’s words. Reciting Shema morning and night makes that attachment concrete. The mitzvah brings Torah into speech, schedule, memory, and heart.

Ibn Ezra

• Source: Ibn Ezra on Devarim 6:7.
• Ibn Ezra explains that the Torah commands speaking these words at the times of lying down and rising. His reading highlights the plain meaning: the words of faith must accompany a Jew at the beginning and close of the day.

Sforno

• Source: Sforno on Devarim 6:7.
• Sforno explains that the words of Torah must be present in a person’s ordinary life and daily transitions. Shema trains a person to keep Hashem’s truth before him not only in formal learning, but while entering the day and leaving it.

Abarbanel

• Source: Abarbanel on Devarim 6.
• Abarbanel explains that Shema contains the great principles of faith: Hashem’s unity, love of Hashem, Torah transmission, and mitzvah life. Reciting it twice daily keeps these foundations alive in the nation and prevents belief from becoming distant or weak.

Rabbeinu Bachya

• Source: Rabbeinu Bachya on Devarim 6:4–7.
• Rabbeinu Bachya teaches that Shema is the foundation of accepting Hashem’s unity and kingship. Its daily recitation brings the mind, heart, and mouth into one act of faith. The person says what he believes and binds himself to what he says.

Chizkuni

• Source: Chizkuni on Devarim 6:7.
• Chizkuni explains that Shema is recited at the ordinary times when people lie down and rise. The mitzvah teaches that Torah does not remain outside life. It enters the most basic daily movements of waking and sleeping.

Kuzari

• Source: Kuzari 3:5.
• The Kuzari explains that regular sacred actions renew the soul and keep a Jew aligned with Hashem. Shema is one of these daily anchors. It restores the person to faith, Torah, and Divine service at the beginning and end of the day.

Maharal

• Source: Maharal, Nesivos Olam, Nesiv HaAvodah, Chapter 7.
• Maharal teaches that Shema is the acceptance of Hashem’s kingship and unity. A person declares that all powers and all parts of life are gathered under one Source. This daily declaration gives the soul order and direction.

Ran

• Source: Derashos HaRan, Derush 9.
• Ran explains that belief in Hashem’s unity forms the foundation of Torah life. Shema makes that belief part of daily practice. A Jew does not leave the foundation in the mind alone. He declares it twice each day as the basis of all mitzvos.

Ritva

• Source: Ritva on Berachos 13b.
• Ritva explains that kavvanah — focused intention in the first pasuk is essential because that pasuk contains the main acceptance of Hashem’s unity. Shema therefore requires not only pronunciation, but inward awareness.

Rashba

• Source: Rashba, Teshuvos 5:55.
• Rashba explains that Hashem’s unity must not be understood in physical terms. Shema protects the purity of Jewish belief by declaring that Hashem is One beyond division, body, or comparison. The daily recitation keeps this truth before the mind.

Shulchan Aruch

• Source: Shulchan Aruch, Orach Chaim 58:1.
• Shulchan Aruch rules that the time for morning Shema begins when there is enough light to recognize an acquaintance at a short distance, and ideally it should be said before the end of the first three halachic hours. This gives practical form to “וּבְקוּמֶךָ” — when you rise.

Magen Avraham / Gra

• Source: Magen Avraham, Orach Chaim 58:1; Biur HaGra, Orach Chaim 459:2.
• The Magen Avraham and Gra differ on how to calculate the day for zman Krias Shema — the latest time to recite the morning Shema. The Magen Avraham calculates from alos hashachar — dawn until tzeis hakochavim — nightfall, while the Gra calculates from sunrise until sunset. This creates two commonly listed zmanim for Shema. Practically, many calendars print both times, and a person should follow his community’s practice and ask a rav when unsure.

Shulchan Aruch

• Source: Shulchan Aruch, Orach Chaim 25:4.
• Shulchan Aruch rules that one’s tefillin should be on during Krias Shema and the Amidah. This gives practical form to the covenantal language of Shema: the words [וּקְשַׁרְתָּם לְאוֹת עַל־יָדֶךָ] are not only recited, but physically worn as one accepts the Kingship of Hashem.

Mishnah Berurah

• Source: Mishnah Berurah 25:14.
• Mishnah Berurah explains that one should at least have tefillin on during Shema and the Amidah. He cites the Gemara that reciting Shema without tefillin can be considered like bearing false testimony against oneself, because the person says [וּקְשַׁרְתָּם] while not wearing them. However, this applies when a person intentionally avoids putting on tefillin. If he does not currently have tefillin, is traveling, or any similar scenario which would cause delay and miss zman Krias Shema, he should recite Shema on time and put on tefillin afterward when possible. This strengthens the idea that Shema is meant to become lived action, while also preserving the priority of reciting Shema in its proper time.

Shulchan Aruch

• Source: Shulchan Aruch, Orach Chaim 235:1.
• Shulchan Aruch rules that the time for evening Shema begins at nightfall and continues through the night, with care to say it properly and not delay without need. This gives practical form to “וּבְשָׁכְבְּךָ” — when you lie down.

Shulchan Aruch

• Source: Shulchan Aruch, Orach Chaim 60:5.
• Shulchan Aruch rules that mitzvos require kavvanah — intention, and this applies strongly to Shema. A person should know that he is fulfilling Hashem’s command and accepting His kingship.

Shulchan Aruch

• Source: Shulchan Aruch, Orach Chaim 61:4–6.
• Shulchan Aruch rules that one must concentrate on the first pasuk of Shema, especially the word אֶחָד — One. This is the inner heart of the mitzvah. The person must declare Hashem’s unity with awareness.

Rema

• Source: Rema, Orach Chaim 61:6.
• Rema records the practice to extend the dalet of אֶחָד — One long enough to think that Hashem rules above, below, and in all four directions. The practice gives mental shape to the acceptance of Hashem’s unity.

Mishnah Berurah

• Source: Mishnah Berurah 61:18–20.
• Mishnah Berurah explains the kavvanah — focused intention required when saying Shema and warns not to distort the word אֶחָד. The mitzvah requires both deep thought and correct speech.

Chasam Sofer

• Source: Chasam Sofer, Toras Moshe, Va’eschanan, s.v. “שְׁמַע יִשְׂרָאֵל.”
• Chasam Sofer explains that Shema is the testimony of Israel that Hashem alone rules. Saying it daily makes each Jew a witness. The mitzvah turns faith into a repeated act of loyalty.

Netziv

• Source: Netziv, HaEmek Davar on Devarim 6:7.
• Netziv emphasizes that Shema must be spoken and taught in the regular settings of life. The mitzvah trains the Jew to place Torah speech into the home, road, morning, and night. Faith becomes steady because it is repeated.

Rav Shimshon Raphael Hirsch

• Source: Rav Hirsch on Devarim 6:7.
• Rav Hirsch teaches that Shema places the whole of life under Hashem’s rule. The morning declaration prepares the person to act as Hashem’s servant during the day. The evening declaration returns the day’s life to Hashem before rest.

Malbim

• Source: Malbim on Devarim 6:7.
• Malbim explains that the Torah’s wording teaches both teaching Torah and constant recitation at set times. Shema is not an occasional expression of faith. It is a disciplined daily structure that keeps the heart attached to Hashem.

Meshech Chochmah

• Source: Meshech Chochmah on Devarim 6:7.
• Meshech Chochmah explains that Shema joins belief with practical mitzvah life. The same passage that declares Hashem’s unity also speaks of Torah teaching, tefillin, and mezuzah. The daily recitation reminds a Jew that faith must become action.

Rav Kook

• Source: Rav Avraham Yitzchok HaCohen Kook, Olat Re’iyah, Krias Shema.
• Rav Kook teaches that Shema gathers the scattered powers of the soul into one point of Divine unity. When a Jew says Shema with depth, his thoughts, desires, and actions begin to align around Hashem.

Baal Shem Tov

• Source: Baal Shem Tov al HaTorah, Va’eschanan.
• The Baal Shem Tov teaches that Hashem’s presence fills and sustains every moment. Shema trains a person to hear that truth within ordinary life. Morning and night become gates for recognizing Hashem’s nearness.

Tanya

• Source: Tanya, Shaar HaYichud VehaEmunah, Chapter 1.
• Tanya explains that all creation exists only through Hashem’s constant life-giving word. Shema gives voice to that truth. When a Jew says Hashem is One, he declares that nothing has independent existence apart from Hashem.

Sfas Emes

• Source: Sfas Emes, Va’eschanan 5632.
• Sfas Emes teaches that Shema reveals hidden unity within a world that appears divided. Saying Shema each day helps the soul return to its root and remember that all parts of life come from one Source.

Kedushas Levi

• Source: Kedushas Levi, Va’eschanan, s.v. “שְׁמַע יִשְׂרָאֵל.”
• Kedushas Levi presents Shema as a declaration of love between Israel and Hashem. The Jew does not only accept Hashem’s rule. He gives his heart to Hashem with love and loyalty.

Shem MiShmuel

• Source: Shem MiShmuel, Va’eschanan 5672.
• Shem MiShmuel explains that Shema gathers a person’s scattered inner forces. Fear, desire, thought, and action can pull in different directions. Shema draws them back to one center: Hashem.

Ramchal

• Source: Ramchal, Derech Hashem 4:4:1.
• Ramchal explains that daily avodah — service of Hashem is arranged to renew a person’s bond with Hashem and protect him from spiritual dullness. Shema is central to this renewal because it places acceptance of Hashem’s kingship into the daily order of life.

Mitzvah 76 appears in the first paragraph of Shema, after the declaration of Hashem’s unity and the command to love Him. The Torah commands that these words be spoken “when you lie down and when you rise.” Chazal define this as the obligation to say Shema at night and in the morning.

This mitzvah belongs to the daily avodah — service of a Jew. It is closely connected to tefillah — prayer, but it remains its own mitzvah. Tefillah is service through request, praise, and standing before Hashem. Shema is acceptance of Hashem’s unity and kingship through Torah words.

Shema also connects many mitzvos together. It includes יִחוּד ה׳ — the unity of Hashem, אַהֲבַת ה׳ — love of Hashem, תלמוד תורה — Torah learning, tefillin, mezuzah, remembering mitzvos, and the Exodus from Mitzrayim. It is a daily summary of Jewish loyalty.

The mitzvah gives sacred rhythm to time. Morning and evening are not empty transitions. They become moments of faith, speech, thought, and commitment. Through Shema, each day is framed by Hashem’s unity.