Yahweh, also known as Jehovah, is the personal name of the God of Israel in the Hebrew Bible (Old Testament). The name is revealed to Moses at the burning bush and is considered the most sacred and significant name of God in Judaism. It is often translated as "I am who I am" or "I am that I am".
Yahweh is central to the monotheistic belief of the Israelites and later the Jewish people. The Ten Commandments begin with the statement "I am the Lord your God" emphasizing the exclusive worship of Yahweh. The name Yahweh represents the eternal and unchanging nature of God, and His covenant relationship with the people of Israel.
The worship of Yahweh involved rituals, sacrifices, and observance of the Law (Torah). The Tabernacle and later the Temple in Jerusalem were central places of worship for the Israelites. The Shema, a declaration of faith in Yahweh, is recited daily by devout Jews.
Christianity views Yahweh as the God of the Old Testament and the Father of Jesus Christ. The New Testament emphasizes the loving and merciful nature of Yahweh, and His universal lordship over all creation.