Saul took him that day, and would let him go no more home to his father's house.
David’s commitment to God resulted in his prospering (the fertility motif). David acted wisely, the literal meaning of the Hebrew word translated "prospered" (1 Samuel 18:5; 1 Samuel 18:14-15), also because God was with him (1 Samuel 18:12; 1 Samuel 18:14; cf. 1 Samuel 16:13). Not only did Jonathan love David, but all the people, including even Saul’s servants, those people who were most loyal to the king, did too (1 Samuel 18:5). God blesses personally those who relate to Him properly. They also become channels of blessing to others (cf. 1 Samuel 2:30; Genesis 12:2).