To whom did Christ become the author of salvation?

Answer

"And being made perfect, He became the author of eternal salvation unto all them that obey Him." Verse 9.

Who was this promised seed?
What testimony did the chief priests and Pharisees bear concerning Christ's work?
Is there a limit to the strivings of God's Spirit?
What was offered in this sanctuary?
What part of the law of God especially has the Papacy thought to change?
What is Peter's testimony regarding it?
What, aside from sin, causes more sorrow than all else?

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