Which concept in Judaism emphasizes a singular, all-powerful God?

The concept that emphasizes a singular, all-powerful God in Judaism is monotheism. This belief system asserts that there is only one God who is the creator and ruler of the universe. Monotheism is a fundamental aspect of Jewish theology, as encapsulated in statements like the Shema, which affirms the oneness of God: "Hear, O Israel: The Lord our God, the Lord is one" (Deuteronomy 6:4).

This principle distinguishes Judaism from polytheistic religions, which believe in multiple gods, and also sets it apart from atheistic views, which deny the existence of any deity. Additionally, while deism acknowledges a creator, it does not necessarily align with the personal and covenantal understanding of God found in Judaism. Monotheism is integral to Jewish identity, encompassing both the belief in a single divine being and the understanding of God's omnipotence.