'Twenty' in the Bible

The children of Israel cried to Yahweh: for he had nine hundred chariots of iron; and twenty years he mightily oppressed the children of Israel.

Now Zebah and Zalmunna were in Karkor, and their armies with them, about fifteen thousand men, all who were left of all the army of the children of the east; for there fell one hundred twenty thousand men who drew sword.

He struck them from Aroer until you come to Minnith, even twenty cities, and to Abelcheramim, with a very great slaughter. So the children of Ammon were subdued before the children of Israel.

He judged Israel in the days of the Philistines twenty years.

Then his brothers and all the house of his father came down, and took him, and brought him up, and buried him between Zorah and Eshtaol in the burial site of Manoah his father. He judged Israel twenty years.