17 and Jonathan adds to cause David to swear, because he loves him, for with the love of his own soul he has loved him.
1 Samuel 20:17 Cross References - CLV
Deuteronomy 13:6
6 In case your brother, the son of your father, or the son of your mother or your son or your daughter or the wife of your bosom or your associate who is as your own soul should incite you in concealment, saying:Let us go, and let us serve other elohim (whom you have not known, you or your fathers,
1 Samuel 18:1
1 And it comes to pass, when he finishes to speak unto Saul, that the soul of Jonathan has been bound to the soul of David, and Jonathan loves him as his own soul.
1 Samuel 18:3
3 And Jonathan makes--also David--a covenant, because he loves him as his own soul,
2 Samuel 1:26
26 I am in distress for you, my brother Jonathan, Very pleasant wast you to me; Wonderful was your love to me, Above the love of women!"
Proverbs 18:24
24 There are associates disposed to be evildoers, Yet there is one with love more loyal than a brother's."