- Jesus was led into the wilderness to fast and pray for 40 days - Matthew 4
- Jonah began to call Nineveh to repent for 40 days which they did with fasting - Jonah 3
- Moses went up the mountain, spent time with God, got the covenant and he fasted 40 days - Exodus 34
It's pretty clear God is calling us to repent, fast and pray. What do you think? I think Joel 2 says it best.