1st Samuel 17:14

11 And when Saul and all Israel heard those words of the Philistine, they were dismayed, and greatly afraid.

12 Now David was the son of that Ephrathite of Beth-lehem-judah, whose name was Jesse; and he had eight sons: and the man was an old man in the days of Saul, stricken [in years] among men.

13 And the three eldest sons of Jesse had gone after Saul to the battle: and the names of his three sons that went to the battle were Eliab the first-born, and next unto him Abinadab, and the third Shammah.

14 And David was the youngest; and the three eldest followed Saul.

15 Now David went to and fro from Saul to feed his father`s sheep at Beth-lehem.

16 And the Philistine drew near morning and evening, and presented himself forty days.

17 And Jesse said unto David his son, Take now for thy brethren an ephah of this parched grain, and these ten loaves, and carry [them] quickly to the camp to thy brethren;