'Forty Years' in the Bible

For the man was above forty years old, on whom this miraculous cure was wrought.

And when he was full forty years old, it came into his heart to visit his brethren the children of Israel.

And when forty years were expired, there appeared to him in the wilderness of mount Sina, an angel of the Lord in a flame of fire in a bush.

And he brought them out, performing wonders and signs in the land of Egypt, and in the red sea, and in the wilderness, forty years.

Then God turned away, and gave them up to worship the host of heaven, as it is written in the book of the prophets, "O house of Israel, did ye offer to me your victims and sacrifices, for the space of forty years in the wilderness?

And about forty years He bare with their behaviour in the wilderness.

And then they desired a king: and God gave them Saul the Son of Kish, a man of the tribe of Benjamin, for the space of forty years.