Once confronted by the presence of the Holy One, man’s personal viewpoint always becomes increasingly realistic. By all standards, Job was a good man, yet the presence of God caused him to abhor himself “and repent in dust and ashes.” Conviction always magnifies the greatness of God and reminds man of his own vile nature. Ezra’s conviction was described as heaviness (Ezra 9:5) which caused him to rend his garment. That conviction humbled Ezra to the point where he said, “I am ashamed and blush to lift up my face to thee, my God: for our iniquities are increased over our head, and our trespass is grown up unto the heavens” (Ezra 9:6).
Without the truth, there can be no true biblical conviction. By definition, conviction is the work of God that convinces an individual concerning the validity of truth and accountability for truth. The Spirit of God takes the law of God and writes it upon men’s hearts. That truth works upon a man’s conscience to accuse or excuse one’s thoughts. Either way, this work is very much the work of conviction. On one hand, a man develops the conviction that Jesus is the only way to get his sins forgiven. On the other hand, a man sees himself as sinful with no hope. In the end, conviction demands a holy God and a holy truth in order to forgive sin. Both elements working together bring true biblical heartfelt conviction.
Most Christians would consider biblical fasting a very unpleasant undertaking. Considering the complexities of the affliction offered by fasting might better help to understand its value. In our passage, the people of God determined to fast so that they might afflict themselves before the Lord. Several other passages discuss this affliction in even more detail. Isaiah 58:3 and 5 describes the affliction as not merely an affliction of the flesh, but also an affliction of the soul. Additionally, we learn that fasting humbles (Psalm 35:13) and chastens (Psalm 69:10) the soul. Fasting involves much more than merely opposition to one’s flesh. Fasting directly afflicts, chastens, and humbles the soul. Perhaps this is why it is so difficult to fast and so beneficial to do so.
Fasting, similar to other actions in life, has specific purposes and appointed times. The Bible offers various reasons why people might fast: an immediate need in prayer (2 Samuel 12:16), a need to loosen the bands of wickedness or undo heavy burdens (Isaiah 58:6), during times of elevated conflict or duty in service (Matthew 17:21; Acts 13:3), as a symbol of mourning (2 Samuel 1:12), and as an outward manifestation of true repentance (Jonah 3:5). This list is not exhaustive, but simply demonstrates that God’s people have many good reasons for fasting. Even if none of these circumstances surfaces in our lives, we should fast because we know that the Lord expects us to do so.