Shema Yisrael (Shema Israel or Sh'ma Yisrael; Hebrew: שְׁמַע יִשְׂרָאֵל, lit. 'Hear, O Israel') is a Jewish prayer (known as the Shema) that serves as a centerpiece of the morning and evening Jewish prayer services. Its first verse, Deuteronomy 6:4, encapsulates the monotheistic essence of Judaism: "Hear, O Israel: YHWH our God, YHWH is one" (שְׁמַע יִשְׂרָאֵל יְהוָה אֱלֹהֵינוּ יְהוָה אֶחָֽד׃).
The first part can be translated as either "The LORD our God" or "The LORD is our God", and the second part as either "the LORD is one" or as "the one LORD" (in the sense of "the LORD alone"). Hebrew does not generally use a copula in the present tense, so translators must decide by inference which translation is appropriate in English. The word used for "the LORD" is the Tetragrammaton (YHWH).