Matthew 18:1-4King James Version (KJV)

18 At the same time came the disciples unto Jesus, saying, Who is the greatest in the kingdom of heaven?

² And Jesus called a little child unto him, and set him in the midst of them,

³ And said, Verily I say unto you, Except ye be converted, and become as little children, ye shall not enter into the kingdom of heaven.

⁴ Whosoever therefore shall humble himself as this little child, the same is greatest in the kingdom of heaven.