There is no one verse. The bible in general should do it. The Ten Commandments are mostly bad. They point out the jealous tribal god. In some of the old manuscripts god's name was "jealous." He outdone all the other gods all the time and killed men, women, and children. His followers should be happy to dash the heads of children upon the rocks. (You can Google these things and find verses.) Just use a few key words.
Part of the harm is in keeping people ignorant. Many still teach that Lot's wife was turned into a pillar of salt. Just as many believe it. This is an impossibility.