Albert Barnes Commentary Psalms 28:4

"Give them according to their work, and according to the wickedness of their doings: Give them after the operation of their hands; Render to them their desert." — Psalms 28:4 (ASV)

Give them according to their deeds - Deal righteously with them. Recompense them as they deserve.

And according to the wickedness of their endeavours - Their designs; their works; their plans.

Give them after the work of their hands - Reward them according to what they do.

Render to them their desert - A just recompense. This whole verse is a prayer that God would deal justly with them. There is no evidence that there is anything of vindictiveness or malice in the prayer. In itself considered, there is no impropriety in praying that justice may be done to the violators of law. See the general introduction, section 6.