[and become as little children]-humble himself as this little child,
this does not say children[young kids] are greatest in the kingdom,
to become like a child means to have a blank slate to wright on.
you have to forget what the world has taught you, and come out of it,
mans traditions are to be thrown away and replaced with Gods ways
and with age comes wisdom, for most but not all.
Chapter 18
1 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.
Who is the greatest in the kingdom of heaven?