'Twenty' in the Bible

The Israelis cried out to the LORD, because of his 900 iron chariots. Jabin oppressed the Israelis forcefully for twenty years.

He attacked them from Aroer to the entrance of Minnith twenty cities in all even as far as Abel-keramim. As a result, the Ammonites were subdued right in front of the Israelis.

Samson governed Israel for twenty years during the Philistine domination.