Matthew 18:6
But whoever causes one of these little ones who believe in me to sin, it would be better for him to have a great millstone fastened around his neck and to be drowned in the depth of the sea. The warning against causing the little ones who believe to stumble — the skandalizo language of the stumbling block — is severe: drowning in the sea with a millstone would be preferable to the judgment that awaits the one who causes a believer to fall. The little ones who believe are the humbled-like-children of the kingdom, the vulnerable believers who depend on the community's protection.