Why the Shema (Deut 6:4-5) Is Central to Judaism

The Shema (from the Hebrew word for "Hear," שְׁמַע) draws its centrality from two declarations packed into a few lines. First, "Jehovah our God is one Jehovah" affirms monotheism in a polytheistic ancient world, distinguishing Israel's God from every other claimant to deity. Second, the command to love God "with all thy heart, and with all thy soul, and with all thy might" demands that devotion engage the whole person — emotion, will, and strength — leaving no compartment of life unclaimed by God. Together they form a creed and a commandment, a statement of belief and a call to total allegiance.

Because it distills covenant identity so compactly, the Shema was inscribed in the daily prayer liturgy (twice a day, morning and evening, according to Numbers 15:38-39 and Deuteronomy 6:7) and placed in the phylacteries (tefillin) worn on the hand and head, as well as in the mezuzah on the doorpost (Deuteronomy 6:8-9). It also served as Israel's earliest credo: scripture itself frames it as the response a parent gives when a child later asks, "What mean the testimonies, and the statutes, and the ordinances?" (Deuteronomy 6:20). Reciting the Shema thus became the act by which each generation reaffirmed the nation's confession at the very moments of daily life.

Its centrality is also theological. The triad of "heart, soul, and might" became the rabbinic basis for encompassing every faculty (later exegesis added "with all your resources" in Deuteronomy 6:5). Rabbi Akiva is reported to have called it the greatest verse in the Torah, while Ben Azzai noted that Genesis 5:1 matched its scope — both texts together proclaiming that God alone is the source and measure of human identity. Centuries later Jesus cited this passage as the first and greatest commandment (Matthew 22:37-38), confirming its enduring weight. In Jewish tradition, martyrs are said to have died with the Shema on their lips, sealing its place as the confession of God's undivided sovereignty.

Deuteronomy 6 opens the central theological section of the book, where Moses grounds covenant obedience in the exclusive love and loyalty owed to God. Verses 4-5 sit within a passage that begins by urging Israel to hear and observe God's commandments (vv. 1-3) and continues by calling these words to be bound on the hand, worn between the eyes, and written on the doorposts (vv. 6-9). The entire unit treats the Shema as the creed that must permeate every sphere of daily existence — household conversation, meals, rest, and travel — before moving to warnings against forgetting God after entering the promised land (vv. 10-15).

Historically, the Shema served as Israel's foundational confession during the Second Temple period. Its placement in the tefillin (phylacteries) and mezuzah made it physically inescapable in Jewish domestic and personal devotion, and the Mishnah (Berakhot) records its recitation twice daily. The confession also formed the pattern that later rabbis used to summarize the entire law: loving God utterly is the principle from which all other commandments derive. This is the stream the New Testament draws on when Jesus cites Deuteronomy 6:4-5 as the greatest commandment (Mark 12:29-30).