They slew not any; which was strange, considering how David dealt with them, 1 Samuel 27:9. But this must be ascribed partly to their selfish or fleshly interest; for they might reserve them, either to make sale of them for their profit, or to abuse them for their lust; or, it may be, to revenge themselves upon David and his men, by reserving them to extraordinary, and lingering, and repeated punishments; but principally to God's overruling and wonderful providence, who set these bounds to their rage; and though he designed to chastise David's sin and folly, yet would not deliver him nor his up to death.
Related Commentaries of 1 Samuel 30:2
1 Samuel 30:2
2 And had taken the women captives, that were therein: they slew not any, either great or small, but carried them away, and went on their way.