Life Story
Jonathan's courage is established before David ever appears in the story: with only his armor-bearer, he climbed a cliff to attack a Philistine garrison at Michmash, reasoning that 'the LORD can save by many or by few,' and God turned the attack into a rout of the entire Philistine army (1 Samuel 14:1-15). His father Saul's rash oath nearly cost Jonathan his life that same day — the army had been forbidden to eat, and Jonathan, unaware, tasted some honey — but the people themselves intervened to save him, showing Jonathan already held loyalty independent of his father's authority (1 Samuel 14:24-45). After David killed Goliath, Jonathan's soul was 'knit to the soul of David'; he loved him as himself, made a covenant with him, and gave David his own robe, armor, sword, bow, and belt — a startling gesture that symbolically surrendered the trappings of the throne Jonathan stood to inherit as Saul's own son (1 Samuel 18:1-4). As Saul's jealousy of David turned murderous, Jonathan intervened repeatedly: he spoke well of David to his father and won a temporary reconciliation (1 Samuel 19:1-7), then later, once convinced his father was set on killing David, warned him through a prearranged signal with arrows and sent him away weeping, the two renewing a covenant that Jonathan's descendants would be shown kindness by David's house — Saul was so enraged at his son's loyalty to David that he hurled a spear at Jonathan himself (1 Samuel 20; 1 Samuel 20:30-33). Their last recorded meeting came while David was a fugitive in the wilderness of Ziph: Jonathan visited him in hiding and openly acknowledged that David, not himself, would be king, encouraging him to find his strength in God (1 Samuel 23:16-18). Jonathan died alongside his father and two brothers in Israel's disastrous defeat by the Philistines at Mount Gilboa (1 Samuel 31:2). David's lament over their deaths, 'How the mighty have fallen,' singles out Jonathan by name, mourning a friendship 'more wonderful than the love of women' — covenant language for a loyalty that had cost Jonathan his own claim to the throne (2 Samuel 1:17-27).
Family
Jonathan was the eldest son of King Saul, brother to Ishvi (also called Abinadab) and Malchishua, though he is remembered far more for his covenant friendship with David than for his own household. He had a young son, Mephibosheth, who was crippled in a fall while fleeing as a child on the day news arrived of his father's and grandfather's deaths at Gilboa (2 Samuel 4:4). Years later, David sought out any surviving member of Saul's house 'that I may show him kindness for Jonathan's sake,' found Mephibosheth, and restored his grandfather's land to him and gave him a permanent place at the king's own table — a covenant promise made between two friends decades earlier, paid out to the next generation (2 Samuel 9).