2 Samuel 22:27-31

With the pure thou wilt shew thyself pure; and with the froward thou wilt shew thyself unsavoury.

And the afflicted people thou wilt save: but thine eyes are upon the haughty, that thou mayest bring them down.

For thou art my lamp, O LORD: and the LORD will lighten my darkness.

For by thee I have run through a troop: by my God have I leaped over a wall.

As for God, his way is perfect; the word of the LORD is tried: he is a buckler to all them that trust in him.