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.

Why did the apostle say this duty was so imperative?
What has ever been the theme of God's prophets?
While God is merciful, does this clear the guilty?
What special miracle is finally to be performed to deceive men, and fasten them in deception?
What further imperial legislation in behalf of Sunday observance was issued in 386?
How is the fifth trumpet, or first woe, introduced?
From whom do all good and perfect gifts come?

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