Albert Barnes Commentary 1 Samuel 25:11

"Shall I then take my bread, and my water, and my flesh that I have killed for my shearers, and give it unto men of whom I know not whence they are?" — 1 Samuel 25:11 (ASV)

The mention of water indicates a country where it was scarce . Alternatively, the phrase “bread and water” may be equivalent to “food and drink.”