Did God see every believer of all ages in Christ when Jesus hung on the cross?
Yes. Scripture presents salvation as a miracle: from Adam to the last person saved at the end of time, every one of them was seen by God in the person of Christ as He hung on the cross. This encompasses all believers of all ages.
Les explains that this is one of the miracles of Scripture and one of the miracles of salvation. Regardless of whether the person is Adam or the last person who will find salvation at the end of time as we know it, every one of them was seen by God in the person of Christ as He hung on the cross. Thus God saw every believer of all ages in Christ at that cross.