Your hand shall find out all your enemies: your right hand shall find out those that hate you.
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Augustine of Hippo
AD 430
9. "Let Thy hand be found by all Thine enemies." Be Thy power, O King, when Thou comest to judgment, found by all Thine enemies; who in Thy humiliation discerned it not. "Let Thy right hand find out all that hate Thee" (ver. 8). Let the glory, wherein Thou reignest at the right hand of the Father, find out for punishment in the day of judgment all that hate Thee ; for that now they have not found it.
Thy hand. O king, Messias, or God. No earthly monarch can always punish his enemies. But none can escape the hand of the Almighty. He will bring all to judgment. (Berthier)
The just approve of God's decree in punishing. This is all a prediction. (Worthington)
Let thine enemies find thy power, so as to return to good. (St. Jerome)
To find, often means to attack, (Judges i. 5., and 3 Kings xiii. 24.) or to accomplish with ease, Deuteronomy xxxiii. 1.