'Forty' in the Bible

About forty thousand armed for war went over before the Lord to the fight, to the lowlands of Jericho.

For the children of Israel were wandering in the waste land for forty years, till all the nation, that is, all the fighting-men, who had come out of Egypt, were dead, because they did not give ear to the voice of the Lord: to whom the Lord said, with an oath, that he would not let them see the land which the Lord had given his word to their fathers to give us, a land flowing with milk and honey.

I was forty years old when Moses, the servant of the Lord, sent me from Kadesh-barnea to make a search through the land; and the account which I gave him was in keeping with his desire.

And now, as you see, the Lord has kept me safe these forty-five years, from the time when the Lord said this to Moses, while Israel was wandering in the waste land: and now I am eighty-five years old.

All the towns of the Levites, among the heritage of the children of Israel, were forty-eight towns with their grass-lands.