6. When the wicked man departed from me, I knew him not [ Psalm 100:4 ]. I approved him not, I praised him not, he pleased me not. For we find the word to know occasionally used in Scripture, in the sense of to be pleased. For what is hidden from God, brethren? Does He know the just, and does He not know the unjust? What do you think of, that He does not know? I say not, what do you think; but what will you ever think, that He will not have seen beforehand? God knows all things, then; and yet in the end, that is in judgment after mercy,
Expositions on the Psalms (Augustine)