Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX

1 Samuel 20:13

God do so to Jonathan and more also: as I shall [also] report the evil to thee, and make it known to thee, and I will let thee go; and thou shalt depart in peace, and the Lord shall be with thee, as he was with my father.

Read in other translations