God uses symbols
God uses symbols not only to reveal the spiritual character of physical people and events, but also to demonstrate their relationships to each other.
For instance, when Satan is called a serpent, it is because he is using the weapon of deceit, spewing it out of his mouth like counterfeit living water. When Satan is called a dragon, he is using the weapon of death, inciting a mob or government to kill God’s people.
The land and the sea are the physical land and sea in Genesis, but once God narrows His focus down to a priestly nation, Israel becomes the Land, and the Gentiles become the Sea. This demonstrates the boundary set by God between Jews and Gentiles. When Israel sins, the Gentiles rush in like a flood.
