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?
What are the wages of sin?
What change is wrought in conversion, or the new birth?
What did this little horn do to the people of God?
5. What, in the parable, did God say to the rich man who thought to build larger barns in which to store his goods?
What did John see concerning this city?
How long will they possess the future kingdom?

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