Thematic Bible: Those that are not converted

At that time the disciples came up and asked Jesus, Who then is [really] the greatest in the kingdom of heaven? And He called a little child to Himself and put him in the midst of them, And said, Truly I say to you, unless you repent (change, turn about) and become like little children [trusting, lowly, loving, forgiving], you can never enter the kingdom of heaven [at all].