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.

Whom did God promise to send with Israel to guide them into the promised land?
In what other way is this same truth stated?
What would make the death of Christ in vain?
What is to endure throughout all generations?
Why was Christ declared worthy to open these seals?
How long will they live?
Is there any limit to God's ability to help?

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