Because those children have bodies made out of flesh and blood, Jesus became human like them in order to die for them. By doing that, he could stop the one who rules over the kingdom of death, that is, the devil,
Without question, true godliness comes from this great mystery: Jesus came as a human being, and he was declared right with God by the Holy Spirit. He was seen by angels, preached among the nations, believed on in the world, and taken up in glory.