'Little Children' in the Bible

'And to what shall I liken this generation? it is like little children in market-places, sitting and calling to their comrades,

At that time Jesus made answer and said, I give praise to you, O Father, Lord of heaven and earth, because you have kept these things secret from the wise and the men of learning, and have made them clear to little children.

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.

"Be careful not to look with scorn on a single one of these little children, for I tell you that in heaven their angels have uninterrupted access to my Father in heaven.

Then were there brought unto him little children, that he should put his hands on them, and pray: and the disciples rebuked them.

But Jesus said, Suffer little children, and forbid them not, to come unto me: for of such is the kingdom of heaven.

and asked Him, "Do you hear what they are saying?" Jesus answered them, "Yes. Did you never read this, 'Out of the mouths of little children, yea, of infants, you have perfect praise'?"