Upon what basis is justification granted?

Answer

"And not as it was by one that sinned, so is the gift: for the judgment was by one to condemnation, but the
free gift is of many offences unto justification." Rom. 5: 16.

By what is this cleansing from sin and fitting for God's service accomplished?
How had they done this?
What is of more importance than any outward ceremony?
How did Christ's death affect the ceremonial law?
To what place were the angels that sinned cast?
Why is it better to go to the house of mourning than to the house of feasting?
What is the gospel to everyone that believes?

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