Jonathan and David stayed friends even though King Saul wanted to kill David.
Both Jonathan and David were powerful in battle, David to become king of united Israel and Jonathan to die in the same battle as his father King Saul.
Jonathan in Hebrew means: Jah is given.
and who came powerful in battle Jonathan
Jonathan Attacks the Philistines
13:23 Now a detachment of Philistines had gone out to the pass at Micmash.
141 One day Jonathan son of Saul said to the young man bearing his
armor, "Come, let's go over to the Philistine outpost on the other side." But he did not tell his father.
Saul was staying on the outskirts of Gibeah under a pomegranate tree in Migron. With him were about six hundred men,3 among whom was Ahijah, who was wearing an ephod. He was a son of Ichabod's brother Ahitub son of Phinehas, the son of Eli, the LORD's priest in Shiloh. No one was aware that Jonathan had left.
4 On each side of the pass that Jonathan intended to cross to reach the Philistine outpost was a cliff; one was called Bozez, and the other Seneh.5 One cliff stood to the north toward Micmash, the other to the south toward Geba.
6 Jonathan said to his young armor-bearer, "Come, let's go over to the outpost of those uncircumcised fellows. Perhaps the LORD will act in our behalf. Nothing can hinder the LORD from saving, whether by many or by few."
7 "Do all that you have in mind," his armor-bearer said. "Go ahead; I am with you heart and soul."
8 Jonathan said, "Come, then; we will cross over toward the men and let them see us.9 If they say to us, 'Wait there until we come to you,' we will stay where we are and not go up to them.10 But if they say, 'Come up to us,' we will climb up, because that will be our sign that the LORD has given them into our hands."
11 So both of them showed themselves to the Philistine outpost. "Look!" said the Philistines. "The Hebrews are crawling out of the holes they were hiding in."12 The men of the outpost shouted to Jonathan and his armor-bearer, "Come up to us and we'll teach you a lesson."
So Jonathan said to his armor-bearer, "Climb up after me; the LORD has given them into the hand of Israel."
13 Jonathan climbed up, using his hands and
feet, with his armor-bearer right behind him. The Philistines fell
before Jonathan, and his armor-bearer followed and killed behind him.14 In that first attack Jonathan and his armor-bearer
killed some twenty men in an area of about half an acre.
1 Samuel 14:6-14
If you want to read to full story look it up in the Bible.
Jonathan a true generous friend of David
Characteristics of Jonathan: