Thematic Bible: Jonathan and david confirm a covenant by

Yet David vowed again, saying, “Your father knows well that I have found favor in your sight, and he has said, ‘Do not let Jonathan know this, or he will be grieved.’ But truly as the Lord lives and as your soul lives, there is hardly a step between me and death.” Verse ConceptsLife, Brevity OfThe Frailty Of ManThose Who Did Not TellDeath Of A Father

"If it please my father to do you harm, may the LORD do so to Jonathan and more also, if I do not make it known to you and send you away, that you may go in safety And may the LORD be with you as He has been with my father. "If I am still alive, will you not show me the lovingkindness of the LORD, that I may not die? "You shall not cut off your lovingkindness from my house forever, not even when the LORD cuts off every one of the enemies of David from the face of the earth." read more.
So Jonathan made a covenant with the house of David, saying, "May the LORD require it at the hands of David's enemies." Jonathan made David vow again because of his love for him, because he loved him as he loved his own life.