Charles Ellicott Commentary Micah 3:4

"Then shall they cry unto Jehovah, but he will not answer them; yea, he will hide his face from them at that time, according as they have wrought evil in their doings." — Micah 3:4 (ASV)

Then shall they cry. —“Then”—i.e., in the day of retribution—“then they will call upon me, says the Lord, but I will not hear; they will seek me early, but they will not find me; and that because they hated knowledge, and did not receive the fear of the Lord, but abhorred my counsel and despised my correction. Then it will be too late to knock when the door will be shut, and too late to cry for mercy when it is the time of justice” (Commination Service).

So also Isaiah declared (Isaiah 1:15): When ye spread forth your hands, I will hide mine eyes from you; yea, when ye make many prayers, I will not hear: your hands are full of blood.