1 Samuel 16:19
"Wherefore Saul sent messengers unto Jesse, and said, Send me David thy son, which is with the sheep."
Cross References (ranked by relevance)
And Samuel said unto Jesse, Are here all thy children? And he said, There remaineth yet the youngest, and, behold, he keepeth the sheep. And Samuel said unto Jesse, Send and fetch him: for we will not sit down till he come hither.
But David went and returned from Saul to feed his father’s sheep at Bethlehem.
So he departed thence, and found Elisha the son of Shaphat, who was plowing with twelve yoke of oxen before him, and he with the twelfth: and Elijah passed by him, and cast his mantle upon him.
The words of Amos, who was among the herdmen of Tekoa, which he saw concerning Israel in the days of Uzziah king of Judah, and in the days of Jeroboam the son of Joash king of Israel, two years before the earthquake.
That he may set him with princes, even with the princes of his people.