In this verse we read that Israel was consecrated to the Lord. That was an act of God who had chosen that small people to be his special possession. And everyone had to keep their hands off her. If not, they would pay for it. During the time in the wilderness, the Egyptians, Amalekites, and Moabites experienced that too!
3 Israel was holy to the LORD, the firstfruits of his harvest. All who ate of it incurred guilt; disaster came upon them,declares the LORD.”