In the Old Testament, when God destroyed the earth with water, He caused it to rain 40 days and 40 nights (Genesis 7:12). Moses was on Mount Sinai for 40 days and 40 nights (Exodus 24:18). The Israelite spies took 40 days to spy out Canaan (Numbers 13:25). Goliath taunted Saul’s army for 40 days before David arrived to slay him (1 Samuel 17:16). When Elijah fled from Jezebel, he traveled 40 days and 40 nights to Mt. Horeb (1 Kings 19:8). In the New Testament, Jesus was tempted for 40 days and 40 nights (Matthew 4:2). There were 40 days between Jesus’ resurrection and ascension (Acts 1:3).