1 Samuel 17:28-37

When Eliab, David’s eldest brother, heard him speaking with the men, he burned with anger at him and asked, ‘Why have you come down here? And with whom did you leave those few sheep in the wilderness? I know how conceited you are and how wicked your heart is; you came down only to watch the battle.’ ‘Now what have I done?’ said David. ‘Can’t I even speak?’ He then turned away to someone else and brought up the same matter, and the men answered him as before. What David said was overheard and reported to Saul, and Saul sent for him. David said to Saul, ‘Let no-one lose heart on account of this Philistine; your servant will go and fight him.’ Saul replied, ‘You are not able to go out against this Philistine and fight him; you are only a young man, and he has been a warrior from his youth.’ But David said to Saul, ‘Your servant has been keeping his father’s sheep. When a lion or a bear came and carried off a sheep from the flock, I went after it, struck it and rescued the sheep from its mouth. When it turned on me, I seized it by its hair, struck it and killed it. Your servant has killed both the lion and the bear; this uncircumcised Philistine will be like one of them, because he has defied the armies of the living God. The LORD who rescued me from the paw of the lion and the paw of the bear will rescue me from the hand of this Philistine.’ Saul said to David, ‘Go, and the LORD be with you.’