God commands the festival tithe in Deuteronomy 14:22-27 "that you may learn to fear the Lord your God always," so the offering's ultimate purpose is to teach reverent fear of God, and it is given for believers' benefit. Because money is so vital to daily life, the required offering produces real concern that God intends to use for this end. Fear is unpleasant, ranging from mild distress to terror, yet it is a good gift of God's lovingkindness because it warns and prompts a person to change. Fear first appeared in Genesis 3 when Adam and Eve sinned; sin, not God, produced it, and the first response to knowing what sin does is fear rather than death. When fear rises, a choice must be made, and God designed it to make people dread sin and abandon it, leading to repentance. Paul's dealings with Corinth illustrate this. His sharp rebuke over tolerated immorality put the fear of God and of losing salvation into them, and the resulting godly grief produced repentance, alarm, zeal, and change, which leads to salvation and is never regretted. Worldly sorrow, by contrast, ends in death. Fear is a double-edged sword, uncomfortable yet central to salvation, and so it is necessary to learn it and be thankful for it.