1 Samuel 16:9

5 “In peace,” he replied. “I have come to sacrifice to the LORD. Consecrate yourselves and come with me to the sacrifice.” Then he consecrated Jesse and his sons and invited them to the sacrifice.

6 When they arrived, Samuel saw Eliab and said, “Surely here before the LORD is His anointed.”

7 But the LORD said to Samuel, “Do not consider his appearance or height, for I have rejected him; the LORD does not see as man does. For man sees the outward appearance, but the LORD sees the heart.”

8 Then Jesse called Abinadab and presented him to Samuel, who said, “The LORD has not chosen this one either.”

9 Next Jesse presented Shammah, but Samuel said, “The LORD has not chosen this one either.”

10 Thus Jesse made seven of his sons pass before Samuel, but Samuel told him, “The LORD has not chosen any of these.”

11 And Samuel asked him, “Are these all the sons you have?” “There is still the youngest,” Jesse replied, “but he is tending the sheep.” “Send for him,” Samuel replied. “For we will not sit down to eat until he arrives.”

12 So Jesse sent for his youngest son and brought him in. He was ruddy, with beautiful eyes and a handsome appearance. And the LORD said, “Rise and anoint him, for he is the one.”

13 So Samuel took the horn of oil and anointed him in the presence of his brothers, and the Spirit of the LORD rushed upon David from that day forward. Then Samuel set out and went to Ramah.

Read all of 1 Samuel 16