'Four' in the Bible

Now a river flowed out of Eden to water the garden; and from there it divided and became four [branching] rivers.

against Chedorlaomer king of Elam and Tidal king of Goiim and Amraphel king of Shinar and Arioch king of Ellasar—four kings against five.

The messengers returned to Jacob, saying, “We went to your brother Esau, and now he is coming to meet you, and there are four hundred men with him.”