1 Samuel 17:28-32 English Standard Version (ESV)

28. Now Eliab his eldest brother heard when he spoke to the men. And Eliab’s anger was kindled against David, and he said, “Why have you come down? And with whom have you left those few sheep in the wilderness? I know your presumption and the evil of your heart, for you have come down to see the battle.”

29. And David said, “What have I done now? Was it not but a word?”

30. And he turned away from him toward another, and spoke in the same way, and the people answered him again as before.

31. When the words that David spoke were heard, they repeated them before Saul, and he sent for him.

32. And David said to Saul, “Let no man’s heart fail because of him. Your servant will go and fight with this Philistine.”

1 Samuel 17