David got up from the floor, took a bath, combed his hair, and changed his clothes. Then he went and worshiped in the house of the Lord. When he returned to the palace, he asked for food and ate it as soon as it was served.
so he sent for a clever woman who lived in Tekoa. When she arrived, he said to her, “Pretend that you are in mourning; put on your mourning clothes, and don't comb your hair. Act like a woman who has been in mourning for a long time.
So wash yourself, put on some perfume, and get dressed in your best clothes. Then go where he is threshing, but don't let him know you are there until he has finished eating and drinking.