Parallel
1 Samuel 18:1
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
And it came to pass, when he had made an end of speaking unto Saul, that the soul of Jonathan was knit with the soul of David, and Jonathan loved him as his own soul.
After David had finished speaking with Saul, the souls of Jonathan and David were knit together, and Jonathan loved him as himself.