'Forty' in the Bible

It happened, when he made mention of the ark of God, that Eli fell from off his seat backward by the side of the gate; and his neck broke, and he died; for he was an old man, and heavy. He had judged Israel forty years.

Saul was [forty] years old when he began to reign; and when he had reigned two years over Israel,

The Philistine drew near morning and evening, and presented himself forty days.