1 Samuel 17:28

Eliab's anger was kindled, either because he thought him guilty of intolerable folly, and pride, and presumption, in pretending to such an attempt; or because he feared and concluded he would be certainly ruined in the enterprise; or rather, because he envied him the glory of so great an undertaking; and took this proffer of David's to be, what indeed it was, a reproach to himself, and to all the rest, that having the great God on their side, had not the faith or courage to fight with him. With whom hast thou left those few sheep? thou art much fitter to tend sheep, than to appear in an army, or to fight with a giant. Thy pride, and the naughtiness of thine heart; thy self-confidence, and vain-glory, and curiosity.