Is not this the kind of fasting I have chosen…If you do away with the yoke of oppression, with the pointing finger and malicious talk…then your light will rise in the darkness, and your night will become like the noonday. Isa. 58: 6,9-10
Time and again, God brings me to my knees over my heart attitude expressed out of my mouth. More than once, God has led me to fast negative, critical, judgmental, and complaining words. Why a fast of words? For me, it is harder to fast from negative words than from food. The Hebrew word “fast” means to cover the mouth. So I prayed the words of Psalm 141:3. “Set a guard over my mouth, Lord; keep watch over the door of my lips.” A fast of words is one of the fasts in Isaiah 58. Isaiah 58:9b lists not pointing fingers in judgment and no wicked words as conditions of great blessings listed in verses 10b-12.
The first time God led me to fast for 40 days of all negative, complaining, critical, and judgmental words was one of the hardest experiences of my Christian life. The problem is not my mouth but my heart. Proverbs 4:23 says, “Keep your heart with all diligence, for out of it spring the issues of life.
About two weeks into my fast, I was treated haughtily at a store. As I left the store, I said to myself, “I’ll just take my business elsewhere. That is the second time she has had an attitude with me.” Immediately I heard in my spirit, “No, you are the one with the attitude.” I wanted to fall to my knees on the sidewalk, crying out, “Woe is me! I am ruined! For I am a man of unclean lips, and I live among a people of unclean lips” (Isa. 6:5). O God, take a coal from the altar and purge this wicked heart of mine. God showed me that He was dealing with a root of pride (Isa. 57:15, 1 Peter 5:5-6). I was puffed up with no sense of my own spiritual need.
I struggled for a while in this fast of words, but God softened and sweetened my heart. After that season, I felt like a dog with an invisible electric fence. Every time I opened my mouth to say anything critical, I would get a check from my loving Father. Later, I reviewed my prayer notebook and was amazed at how many Scriptural insights God had given me during that time. God was being faithful to reveal more of Himself.
For a while, I have been keenly aware of living with a grateful heart, thankfully noting God-touches great and small. 1 Corinthians 10:10 says that we have a choice: “And do not grumble, as some of them did and were killed by the destroyer.” We get to choose thankfulness in all things or choose sides with destruction with our words. What a sobering thought.
Ask God if He is leading you to do a forty-day fast of critical, judgmental, negative, complaining, gossiping words. You may be amazed at what God will do through it. At the very least, your family and friends may be amazed at the change in you, from destruction to blessing.
From Prayer Essentials For Living In His Presence, Vol 1, page 144-145