For thus said the Lord of hosts, after his glory sent me to the nations who plundered you, for he who touches you touches the apple of his eye: “Behold, I will shake my hand over them, and they shall become plunder for those who served them. Then you will know that the Lord of hosts has sent me.”(Zechariah 2:8‭-‬9)

God protects his people, whom he considers the apple of his eye. This means that those who lay their hands on God’sins people are laying their hands on God’s most sensitive spot and therefore such enemies will be punished severely by God.