Adam Clarke on Habakkuk 1:13

Thou art of purer eyes - Seeing thou art so pure, and canst not look on iniquity - it is so abominable - how canst thou bear with them who "deal treacherously, and hold thy tongue when the wicked devour the righteous?" All such questions are easily solved by a consideration of God's ineffable mercy, which leads him to suffer long and be kind. He has no pleasure in the death of a sinner.