What does 2 Samuel 14:23 mean?

to change the face of the matter has your servant Joab done this thing. My lord is wise, according to the wisdom of an angel of God, to know all things that are in the earth.”

The king said to Joab, “Behold now, I have done this thing. Go therefore, and bring the young man Absalom back.”

Joab fell to the ground on his face, showed respect, and blessed the king. Joab said, “Today your servant knows that I have found favor in your sight, my lord, king, in that the king has performed the request of his servant.”

The king said, “Let him return to his own house, but let him not see my face.” So Absalom returned to his own house, and didn’t see the king’s face.

Now in all Israel there was no one to be so much praised as Absalom for his beauty. From the sole of his foot even to the crown of his head there was no defect in him.

When he cut the hair of his head (now it was at every year’s end that he cut it; because it was heavy on him, therefore he cut it); he weighed the hair of his head at two hundred shekels, after the king’s weight.