The divine essence is the one, undivided nature of God shared equally by Father, Son, and Holy Spirit. God is spirit (John 4:24). The Shema declares: "Hear, O Israel: The LORD our God is one LORD" (Deuteronomy 6:4). Yet this one God eternally exists in three persons. The Son shares the Father's essence: "I and my Father are one" (John 10:30).
The nature or being of God; that which constitutes what God is in Himself.
ES'SENCE, n. That which constitutes the particular nature of a being. Applied to God, essence refers to what He is in Himself. The Nicene Creed confesses the Son is "of one substance (homoousios) with the Father."
• Deuteronomy 6:4 — "Hear, O Israel: The LORD our God is one LORD."
• John 4:24 — "God is a Spirit: and they that worship Him must worship Him in spirit and in truth."
• John 10:30 — "I and my Father are one."
• Colossians 2:9 — "For in him dwelleth all the fulness of the Godhead bodily."
The divine essence is either reduced to a philosophical abstraction or dissolved into modalism or tritheism.
Process theology denies God's immutable essence. Open theism denies essential omniscience. Modalism collapses the three persons into one. Progressive Christianity treats God's nature as unknowable or irrelevant. But what God is in Himself determines everything about how we worship Him and understand His works.
• "The divine essence is what makes God God — His self-existence, His holiness, His triune being — the foundation of all theology."
• "The Nicene fathers fought over a single Greek letter because they understood that the divine essence of the Son determined the reality of our salvation."