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 encouragement is held out as an aid in attaining this experience?
What was Jesus doing when they found Him?
In what miracle did Christ bring to a climax His works on earth?
What divine purpose was wrought out in the sufferings of Christ?
When will the gifts of the Spirit he no longer needed?
How did David express himself on this point?
Concerning what have we been definitely informed?

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