Question: what does the bible say about 40 days and 40 nights?
Answer: Christianity. Christianity similarly uses forty to designate important time periods. Before his temptation, Jesus fasted "forty days and forty nights" in the Judean desert (Matthew 4:2, Mark 1:13, Luke 4:2). Forty days was the period from the resurrection of Jesus to the ascension of Jesus (Acts 1:3).