Mark 10:15 in the King James Version
Verily I say unto you, Whosoever shall not receive the kingdom of God as a little child, he shall not enter therein.
Context
14 But when Jesus saw it, he was moved with indignation and said to them, “Allow the little children to come to me! Don’t forbid them, for God’s Kingdom belongs to such as these.
15 Most certainly I tell you, whoever will not receive God’s Kingdom like a little child, he will in no way enter into it.”
16 He took them in his arms and blessed them, laying his hands on them.