Translations
Jonathan made David swear again, binding him with a solemn oath, for he loved David as he loved his own soul.
Yonatan made David swear again by his love for him, for he loved him as his own nephesh.
And Jonathan caused David to swear again, because he loved him: for he loved him as he loved his own soul.
And Jonathan had David reaffirm his vow out of love for him, for Jonathan loved David as he loved himself.