I am saying that as soon as Adam disobeyed and sin entered into our life the Lord gave us one way for salvation, it was the way then and it is the way now. That way is only through what Christ did to pay for our sins. In eternal time this was the way of salvation before Bethlehem, the sacrificial system was used as a symbol of Christ. People did not say that it is through Christ who was born in Bethlehem, they said I will do what God told me to do. It was based of faith, as our salvation is based on today. In people time,And yet you can find no one who trusted in the cross for sins before it happened. Are you saying there are multiple ways unto salvation other than the cross?
Christ was not born yet but in God's eternal time it is Christ who always was the key to our salvation. It did not work as well, it was fulfilled when Christ was crucified.