Unfortunately your argument contains the seeds of its own destruction because if that logic is taken to its conclusion it would mean that all of the New Testament is redundant. Christ coming down to Earth itself and suffering and dying would make it seem sadistic since we could all have been saved by living the likes of Noah and Moses. The God of Abraham was revealed in Christ and his teachings whereby He give us His Flesh and Blood in the Holy Eucharist as his Apostles understood Him to say, we will not have life everlasting.
“Unfortunately your argument contains the seeds of its own destruction because if that logic is taken to its conclusion it would mean that all of the New Testament is redundant. Christ coming down to Earth itself and suffering and dying would make it seem sadistic since we could all have been saved by living the likes of Noah and Moses.”
No, I don’t think so. You see, Christ could never be redundant, for if He hadn’t come down to Earth and completed God’s plan for salvation, then Moses and Noah would never have been able to obtain salvation either. So, there is no chance that, even if we could all find faith in Christ outside of even the NT, that Christ would be redundant.