Charles H. Spurgeon on Psalms 6:10

"Let all mine enemies be ashamed and sore vexed." This is rather a prophecy than an imprecation, it may be read in the future, "All my enemies shall be ashamed and sore vexed." They shall return and be ashamed instantaneously, —in a moment; —their doom shall come upon them suddenly. Death's day is doom's day, and both are sure and may be sudden. The Romans were wont to say, "The feet of the avenging Deity are shod with wool." With noiseless footsteps vengeance nears its victim, and sudden and overwhelming shall be its destroying stroke. If this were an imprecation, we must remember that the language of the old dispensation is not that of the new. We pray for our enemies, not against them. God have mercy on them, and bring them into the right way.

Thus the Psalm, like those which preceed it, shews the different estates of the godly and the wicked. O Lord, let us be numbered with thy people, both now and forever!