 He has kids who, though in the world, are not of it. They're at least grasping that God is real. They're kids, and so their faith cannot be mature. But they do have faith. They do recognize God's power. Two of them have been baptized. The third is waiting to do that. He knows that baptism does not mean that you are more of a Christian. It simply means that you have signified your submission to the king.