Lent is a season of repentance and confession. Why do Christians confess sins? Here's an explanation from Frederich Buechner:
TO CONFESS YOUR SINS TO GOD is not to tell God anything God doesn't already know. Until you confess them, however, they are the abyss between you. When you confess them, they become the Golden Gate Bridge.
-Originally published in Wishful Thinking and later in Beyond Words