'Four' in the Bible

A river went out from Eden to water the garden. From there it divided and became the source of four rivers.

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

The four kings took all the goods of Sodom and Gomorrah and all their food and went on.

At harvest, you are to give a fifth of it to Pharaoh, and four-fifths will be yours as seed for the field and as food for yourselves, your households, and your dependents.”