God can use impure vessels to serve his holiness

No one could preach if he seriously looked at his own sins.

A man is called a saint not because he does no longer sin but because he recognizes his weakness and seeks for forgiveness every time he falls

A man is called a sinner not because he sins more than others but because he defends he sins and glories in them and is unwilling to seek forgiveness

No attribute of God is more dreadful to sinners than His holiness.

There is no sin, no crime, no evil, God cannot forgive