How did Jesus emphasize the necessity of conversion?

Answer

"Verily I say unto you, Except you be converted, and become as little children, you shall not enter into the
kingdom of heaven!' Matt. 18: 3.

What writings are specifically mentioned as containing some things difficult to understand?
How many are sinners?
How complete should this obedience be?
By what method of reasoning did Christ justify acts of mercy on the Sabbath day?
How is this beast further described?
22. What did Augustine, the father of this theocratical or church-and-state theory, teach concerning it?
How many will receive a reward when Christ comes?

Questions & Answers are from the book Bible Readings for the Home Circle