Read Mark 9:30-37
30 Jesus and his disciples left that place and went on through Galilee. Jesus did not want anyone to know where he was, 31because he was teaching his disciples: “The Son of Man will be handed over to those who will kill him. Three days later, however, he will rise to life.”
32 But they did not understand what this teaching meant, and they were afraid to ask him.
(Matt 18:1–5; Luke 9:46–48)
33 They came to Capernaum, and after going indoors Jesus asked his disciples, “What were you arguing about on the road?”
34 But they would not answer him, because on the road they had been arguing among themselves about who was the greatest. 35Jesus sat down, called the twelve disciples, and said to them, “Whoever wants to be first must place himself last of all and be the servant of all.” 36Then he took a child and made him stand in front of them. He put his arms round him and said to them, 37“Whoever welcomes in my name one of these children, welcomes me; and whoever welcomes me, welcomes not only me but also the one who sent me.”
Jesus took a child - embraced the child and said that to welcome a child in his name was the same as welcoming him. And to welcome him - is to welcome the one who sent him.
That really is a big deal. Where children are welcome, God is welcome. Where children are not welcome, God is not welcome.