Augustine of Hippo

"Turn away evil things unto mine enemies" [Psalm 54:5]. So however green they are, so however they flourish, for the fire they are being reserved. "In Your virtue destroy Thou them." Because to wit they flourish now, because to wit they spring up like grass: do not thou be a man unwise and foolish, so that by giving thought to these things thou perish for ever and ever. For, "Turn Thou away evil things unto mine enemies." For if you shall have place in the body of David Himself, in His virtue He will destroy them. …

Exposition on Psalm 54 ↗

Hilary of Poitiers

After this there is a return to the Person of God, to Whom the petition was at the first addressed: Destroy them by Your truth. Truth confounds falsehood, and lying is destroyed by truth. We have shown that the whole of the foregoing prayer is the utterance of that human nature in which the Son of God was born; so here it is the voice of human nature calling upon God the Father to destroy His enemies in His truth. What this truth is, stands beyond doubt; it is of course He Who said: I am the Life, the Way, the Truth. …

Homily on Psalm 54 ↗

Thomas Aquinas

"Turn back evils upon my enemies." Here he asks to be heard on behalf of his enemies. And he asks two things against the two things they were doing to him, because they were persecuting him and seeking to kill him. And so he asks that they themselves may suffer persecution and be destroyed. With regard to the first he says, "turn back," namely from me, upon my enemies, the evils which they seek to inflict on me. As if to say: turn upon them those evils which they wish to inflict on me. …

Exposition on the Psalms of David ↗