1 Samuel 26:22-24

Behold the king's spear, &c. He did not think it proper to put himself in Saul's power by going and presenting it himself to him. The Lord render to every man his righteousness In these words David shows the assurance he had that, however Saul dealt by him, the Lord would vindicate his cause on account of his integrity and righteous dealing. So let my life be much set by, &c. He prays that God would spare his life as he had spared Saul's, and show him similar mercy, and then he trusted that he should be delivered out of all his troubles.