The Bible doesn’t begin with the Spirit of God hovering over a gently flowing stream (
that is later) or a peaceful, calm sea (
again, later). It begins with the Spirit of God hovering over a double image of water. Two words are used to describe this chaotic, pre-created sea: “the deep” (
tehom) and “the waters” (
mayim).
Mayim is just the plural form of the word for “water.” However,
tehom will have a negative connotation almost every other time it appears in the Bible [
see for yourself]. That is why it is sometimes translated in English as “the abyss.” The abyss is where the floodwaters come from in Genesis 7. It is where Job’s leviathan lives (Job 41). It is the place the Israelites fled through to escape the Egyptians (and then the place where the Egyptians were drowned when they tried to follow (Exodus 15). It is the waters of the grave that live beneath the earth (Psalm 71).
So the “primeval sea” is the uncreated state, the chaos that preceded God’s ordering of creation as described in Genesis 1. These are the waters of uncreation where no life can flourish, no meanings can take root, no order can take shape. It is the opposite of the good place God is about to bring about as the first chapter of Genesis unfolds.
God is never depicted doing things unilaterally. It was the Israelites who couldn't fight against chariots of iron, not God. Why couldn't they? Because they got scared and didn't trust that God would empower them to do even this. The book of Joshua ends with the land not being fully conquered in spite of God's commandment, and therefore the remaining nations serving as a thorn in Israel's side from then on. God's promise not being entirely fulfilled due to the unfaithfulness of Israel rather than because of God being weak is a theme throughout the whole Bible... This is the point behind the blessing and the curse in the Law.
Anything else?