Assuredly, I say to you, whoever does not receive the kingdom of God as a little child will by no means enter it."
Mark 10:15
Surrounding context
10:14 But when Jesus saw it, He was greatly displeased and said to them, "Let the little children come to Me, and do not forbid them; for of such is the kingdom of God.
10:15 Assuredly, I say to you, whoever does not receive the kingdom of God as a little child will by no means enter it."
10:16 And He took them up in His arms, laid His hands on them, and blessed them.