because he loved him.

1 Samuel 18:1, 3
After David had finished speaking with Saul, the souls of Jonathan and David were knit together, and Jonathan loved him as himself. . . .

Deuteronomy 13:6
If your very own brother, or your son or daughter, or the wife you embrace, or your closest friend secretly entices you, saying, "Let us go and worship other gods" (which neither you nor your fathers have known,

2 Samuel 1:26
I grieve for you, Jonathan, my brother. You were delightful to me; your love to me was extraordinary, surpassing the love of women.

Proverbs 18:24
A man of many companions may come to ruin, but there is a friend who stays closer than a brother.