Psalms 54:7

For he hath delivered me out of all trouble: and mine eye hath seen his desire upon mine enemies.

For he hath delivered me out of all trouble. In faith he sees the deliverance already accomplished, and 'praises' God by anticipation for it (Psalms 54:6).

And mine eye hath seen his desire upon mine enemies - not that he would feast his eyes on the sufferings of his foes, out of private revenge, but he rejoices in the vindication of God's justice.