1 Samuel 18:1-4
And it came to pass, when he had made an end of speaking to Saul, that the soul of Jonathan was knit with the soul of David, and Jonathan loved him as his own soul.
Nave's Topical Index—AKJV

1 Samuel 19:1-7
And Saul spoke to Jonathan his son, and to all his servants, that they should kill David.
Nave's Topical Index—AKJV

1 Samuel 20:1
And David fled from Naioth in Ramah, and came and said before Jonathan, What have I done? what is my iniquity? and what is my sin before your father, that he seeks my life?
Nave's Topical Index—AKJV

1 Samuel 23:16-18
And Jonathan Saul's son arose, and went to David into the wood, and strengthened his hand in God.
Nave's Topical Index—AKJV