1 Grk “Truly (ἀμήν, amēn), I say to you.”
2 The point of the comparison become like little children has more to do with a child’s trusting spirit, as well as willingness to be dependent and receive from others, than any inherent humility the child might possess.
3 The negation in Greek (οὐ μή, ou mē) is very strong here.

In other versions

and said, “Truly, I say to you, unless you turn and become like children, you will never enter the kingdom of heaven.

And he said: “Truly I tell you, unless you change and become like little children, you will never enter the kingdom of heaven.

“Truly I tell you,” he said, “unless you turn and become like little children, you will never enter the kingdom of heaven.

Then he said, “I tell you the truth, unless you turn from your sins and become like little children, you will never get into the Kingdom of Heaven.

and said, “Truly I say to you, unless you turn around and become like young children, you will never enter into the kingdom of heaven!

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.

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