--1 SAMUEL--
He is the root of Jesse
Now David was the son of that Ephrathite of Bethlehemjudah, whose name was Jesse;
1 Samuel 17:12
And Samuel said unto Jesse, Are here all thy children? And he said, There remaineth yet the youngest, and, behold, he keepeth the sheep.......Then Samuel took the horn of oil, and anointed him in the midst of his brethren: and the Spirit of the LORD came upon David from that day forward.
1 Samuel 16:11,13