Mark 10:15

10:15 I tell you the truth, whoever does not receive the kingdom of God like a child will never enter it.”

Mark 6:11

6:11 If a place will not welcome you or listen to you, as you go out from there, shake the dust off your feet as a testimony against them.”

Mark 9:37

9:37 “Whoever welcomes one of these little children in my name welcomes me, and whoever welcomes me does not welcome me but the one who sent me.”