Biblically, fasting is mentioned in both the Old and New Testament. In the Old Testament it was often a way of expressing grief or a means of humbling one's self before the Lord. In Psalm 35:13, David humbled himself with fasting. In the New Testament it was a means to grow closer to God through mediating and focusing on Him. In Matthew 4:1-2, Jesus went to the wilderness to fast for 40 days. In Matthew 6:16-18 we learn that we aren’t to look somber while fasting so that it’s not obvious to others when we are fasting. Throughout the New Testament fasting and prayer are often mentioned together. In Acts 13:3, ‘they had fasted and prayed.’ In Luke 2:37 a widow worshiped day and night fasting and praying.