'Little Children' in the Bible

Whosoever may receive one of such little children in my name, receives me: and whosoever may receive me, receives not me, but Him that sent me.

And they continued to bring little children to Him, that He should touch them: but the disciples rebuked those bringing them.

But Jesus seeing was displeased, and said to them, Suffer the little children to come unto me; and forbid them not: for of such is the kingdom of God.