It's what all of mankind needs to be saved--but faith, nor the Atonement--- didn't save anyone in and by itself. If that were so--grace wouldn't be needed, or, all of mankind would be saved, as the Atonement was a free gift to all men:
Romans 5:18---King James Version
18 Therefore as by the offence of one judgment came upon all men to condemnation; even so by the righteousness of one the free gift came upon all men unto justification of life.
Bonnie--there's a difference between providing the opportunity to inherit eternal life--and the actual reception of eternal life. God opened the door of eternal life to all men--as an opportunity. Only those who obey God receive it:
Hebrews 5:9---King James Version
9 And being made perfect, he became the author of eternal salvation unto all them that obey him;
I liken it to a college--the opportunity to be educated is a free gift--to gain the diploma--one has to meet the criteria of the college.
That's the way Redemption works. The Redeemer pays the debt of the prisoner to release him from bonds--but the redeemed has to meet the conditions of the Redeemer--or he returns to prison.
Jesus's Atonement and resurrection conquered death and hell for all men--as it relates to the Fall, as all were condemned due to the Fall.
We are now judged in accordance with our own choices--and not Adam's--or, meeting the Redeemer's conditions:
John 5:28-29---King James Version
28 Marvel not at this: for the hour is coming, in the which all that are in the graves shall hear his voice,
29 And shall come forth; they that have done good, unto the resurrection of life; and they that have done evil, unto the resurrection of damnation.
So--are those who attain unto life--as a result of their works--those who had faith? Or--are you claiming it's a faith without works which saves?
John 5:28-29 is anathema to faith alone theology.
Exactly what one will find being taught in the LDS church.