Even God doesn't have the right to utterly destroy children (idea)

For the Christian (and, yes, Jewish) God, 2 Kings 2:23,24 contradicts this theory.
As Elisha goes along the road to Bethel...
"...there came forth little children out of the city, and mocked him, and said unto him, Go up, thou bald head; go up, thou bald head.
And he turned back, and looked on them, and cursed them in the name of the LORD. And there came forth two she bears out of the wood, and tare forty and two children of them."