To whom is salvation promised at Christ's appearing?

Answer

"So Christ was once offered to bear the sins of many; and unto them that look for Him shall He appear the
second time without sin unto salvation." Heb. 9: 28.

To whom did this promised seed refer?
What is the whole world called upon to do?
What, more than all else, proves the perpetuity and immutability of the law of God?
What shows that God imputed sin to Cain?
How, then, did the Lord prove the people (verse 4) whether they would keep His law, or not?
What is the character of this new power?
In the judgment, how many angels minister before God?

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