SEV Biblia, Chapter 20:17
Y volvió Jonatán a jurar a David, porque le amaba, porque le amaba como a su propia alma.
John Gill's Bible Commentary
Ver. 17. And Jonathan caused David to swear again , etc.] Or Jonathan added to make David swears f411 ; having sworn himself to make a covenant of friendship with David and his family, he moved and insisted on it, that David should swear to keep covenant with him, and his family: because he loved him ; it was not so much for the good and safety of his offspring that he made this motion, and was so desirous of renewing and enlarging his covenant with David, as it was his strong love and affection for him; being on that account desirous that there might be the strictest friendship imaginable retained between the two families; or he made him swear by his love to him, as some understand it, which is not so likely; the former sense is better, for he himself sware by the Lord, ( 1 Samuel 20:12,13); for he loved him as his own soul ; or “with the love of his soul” f412 ; with the most cordial affection, with a truly hearty and sincere love, (see <091801> Samuel 18:1).
Matthew Henry Commentary
Verses 11-23 - Jonathan faithfully promises that he would let David know how he foun his father affected towards him. It will be kindness to ourselves an to ours, to secure an interest in those whom God favours, and to make his friends ours. True friendship rests on a firm basis, and is able to silence ambition, self-love, and undue regard for others. But who can fully understand the love of Jesus, who gave himself as a sacrifice for rebellious, polluted sinners! how great then ought to be the force an effects of our love to him, to his cause, and his people!
Original Hebrew
ויוסף 3254 יהונתן 3083 להשׁביע 7650 את 853 דוד 1732 באהבתו 160 אתו 853 כי 3588 אהבת 160 נפשׁו 5315 אהבו׃ 157