1 Samuel 19:15 Meaning

13And Michal took an image, and laid it in the bed, and put a pillow of goats' hair for his bolster, and covered it with a cloth.

14And when Saul sent messengers to take David, she said, He is sick.

15And Saul sent the messengers again to see David, saying, Bring him up to me in the bed, that I may slay him.

16And when the messengers were come in, behold, there was an image in the bed, with a pillow of goats' hair for his bolster.

17And Saul said unto Michal, Why hast thou deceived me so, and sent away mine enemy, that he is escaped? And Michal answered Saul, He said unto me, Let me go; why should I kill thee?