A child can be severely abused, both physically and sexually. A child can be neglected to the point that they don’t even know what it’s like to live like a human. Yet, if you try to take a child from his mother, he will fight you. He will fight you to get back to his mom. He will leave a good clean home with food on his plate and a warm bed to sleep in and clean clothes to go to school in just to get back to the home where he was abused and neglected. I know this may not be the case 100% of the time, but it is a pretty solid rule. A child that is abused thinks that it is normal. That is the only life they know. And the bond between a mother and child is very strong, even when the mother is incapable of showing that child love.
“Let the little children come to me, and do not hinder them, for the kingdom of heaven belongs to such as these.” Matthew 19:14