'Forty' in the Bible

Then for forty years the land had peace, till the death of Othniel, the son of Kenaz.

They had no one to make arms, there were no more armed men in the towns; was there a body-cover or a spear to be seen among forty thousand in Israel?

So may destruction come on all your haters, O Lord; but let your lovers be like the sun going out in his strength. And for forty years the land had peace.

So Midian was broken before the children of Israel and the Midianites never got back their strength. And the land had peace for forty years, in the days of Gideon.

Then they said to him, Now say Shibboleth; and he said Sibboleth, and was not able to say it in the right way; then they took him and put him to death at the crossing-places of Jordan; and at that time forty-two thousand Ephraimites were put to death.

He had forty sons and thirty sons' sons who went on seventy young asses; and he was judge of Israel for eight years.

And the children of Israel again did evil in the eyes of the Lord; and the Lord gave them into the hands of the Philistines for forty years.