In the Hebrew language God is Echad. Meaning God is one. Deuteronomy 6. Hear, O Israel: The Lord our God, the Lord is one! Meaning; God is indissoluble, indivisible and inseparable in His original composition of Spirit and truth.
Some people think the first contrast God created was light and dark saying “let there be light. God separated the light from the darkness and called the light day and the darkness night” but light and dark was not the first contrast.
The first contrast was “In the beginning God created”.