In verse 3, the verb “be converted” translates a Greek verb that means “turn.” To be converted, to repent, is to turn back, to return. In what sense is repentance a return?
Christ says that no one can even enter the kingdom (or reign) of heaven without becoming like a child. Then in verse 4 he says that if a person humbles himself and becomes as a child, then he or she is the greatest in the kingdom of heaven. A logical conclusion from the two claims (though rhetoric may trump logic here) is that everyone who enters the kingdom of heaven is the greatest in the kingdom of heaven. How do you make sense of that conclusion?