No my friend, the Word of God is from eternity, He is the I AM. Jesus, who is the Word incarnated, did become the Savior of the world by the shedding of His blood. The title "Savior" was not applied until the New Testament. If salvation could have been found in the Law, then to what purpose was it that Jesus had to die, if salvation could have been found elsewere?
God was Israel's Savoir, 2Sam.22:3, 2Kings 13:5, Psa. 106:21, and many more. The same as He is ours.
Abraham, Issac, and Jacob, were at least 500 yrs before the Law, they walked by faith, the promise was to Abraham and His Seed through faith, NOT by Law, for the Law was not made for a Righteous man, but for the sinner, and ungodly. There are three types of people in the old testament, and even now.
Those of Abraham, those under Law, and the nations (Heathen).
Yes, they died in faith, but where did they go, to Heaven? NO! to Paradise, Abraham's Bosom? Yes! So, if they had an active Savior at that time, why then is it spoken that they went to Hades?