7 “And they have said, The Lord shall not see”: He observes not, regards not these things: He cares for other matters, He understands not. These are the two assertions of the wicked: one which I have just quoted, “These things have you done, and I held my tongue, and you thought unrighteousness, that I will be like yourself.” What means, “that I will be like yourself”? You think that I see your deeds, and that they are pleasing unto Me, because I do not punish them. There is another assertion of the wicked: because God neither regards these things, nor observes that He may know how I live, God heeds me not. Does then God make any reckoning of me? Or does He even take account of me? Or of men in general? Unhappy man! He cared for you, that you might exist: does He not care that thou live well? Such then are the words of these last; “and yet they have said, The Lord shall not see: neither shall the God of Jacob regard it.”
Source: The Enarrations, or Expositions, on the Psalms (New Advent)