For what purpose did Christ say He would come again?

Answer

"I go to prepare a place for you. And if I go and prepare a place for you, I will come again, and receive you
unto Myself; that where I am, there you may be also." John 14: 2, 3.

Upon what evidence did Jesus base His Messiahship?
To whom did Christ become the author of salvation?
How futile was all this?
How did Christ estimate the righteousness of the scribes and Pharisees?
In what similar language is the fate of the fourth beast of Daniel 7 described?
When this sign appeared, what were the disciples to do?
How was Peter delivered later?

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