Dr. Couch, how were people saved pre-Abraham? He was saved by faith (Gen. 15:6) but nothing is said about those who came before.
ANSWER: You are absolutely correct. Nothing is given to us as to how specifically God saved the believing saints before Abraham. But it clearly seems certain they were saved by trusting whatever God put before them, in other words, not knowing all the plan of the Lord, they still trusted His revelations to them at that early moment in human history. Paul simply uses Abraham as the great example of faith, but also of justification by faith. Genesis 15:6 is so clear the apostle felt it really proved the point, especially to the Jews who were attempting to be justified by works.
Thanks for asking.
Dr. Mal Couch