Christ said, "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 drowned in the depth of the sea” (Matthew 18:6)

Matthew 18:6 means that it would be better to suffer a severe consequence, even like being drowned with a large millstone around your neck, than to cause someone who is considered a "little one" (a believer in Christ, often understood as someone vulnerable or new to faith) to stumble or fall into sin; essentially, Jesus is strongly warning against leading others astray, especially those who are easily influenced (yes; even little children). So although the world here on earth is allowing these evil adult people (see attached image) to get away with this here on earth, these evil adult people will bow before Jesus one day and suffer eternal consequences and not only will these evil adult people bow before Jesus one day, they neither have the power nor the authority to excuse themselves from that day