Shema Yisrael

Shema Yisrael (or Sh'ma Yisrael) are the first two words of the section of the Torah which is the central profession of monotheism in the Jewish faith. The first verse says ; "Hear, O Israel: The L ORD our God is one L ORD ."

Old Testament
Originally, the Shema was constituted of a single verse ( - see Talmud Sukkot 42a and Berachot 13b). Currently his recitation involves three parts, which constitute the main basis of the Jewish faith. The three parts are three paragraphs of the Bible and are recited in the Shacharit and Maariv. The full text is found in two Bible books, Deuteronomy (Devarim) and Numbers (Bamidbar):

New Testament
The Shema is one of the sentences that is quoted in the New Testament. The Gospel of Mark 12:29 mentions that Jesus considered the Shema the beginning exhortation of the first of his two greatest commandments:

The Paul the Apostle, writing to the Corinthians around 55 AD, reminded them that all knowledgeable believers readily confessed and acknowledged that there is only one God and Lord, referencing the Shema:

New Testament scholars basically agree that is an early creedal statement which all true Christians were expected to affirm.

Mezuzah
The first two paragraphs of the Shema are written on a scroll, and put in a holster secured on the anvil of the doors of the house. This case with the roll is called Mezuzah.

Tradition
The Shema was constantly on the lips of Jewish martyrs. The last letters of and  comprise the word  ("witness") and are written in large in the Hebrew Bible meaning that those who recite the Shema testify to the oneness of God before the world.