'Forty Years' in the Bible

and the land resteth forty years. And Othniel son of Kenaz dieth,

So do all Thine enemies perish, O Jehovah, And those loving Him are As the going out of the sun in its might!' and the land resteth forty years.

And Midian is humbled before the sons of Israel, and have not added to lift up their head; and the land resteth forty years in the days of Gideon.

And the sons of Israel add to do the evil thing in the eyes of Jehovah, and Jehovah giveth them into the hand of the Philistines forty years.