The new doctrines are obviously given by the Spirit as times change. There would be no reason to teach the early Church about in vitro fertilization or the birth control pill until it was needed.
Do you see the logic of that? It is an unfolding of God’s will for His Church and children over time.
We are maturing into fuller understanding. Is this difficult to understand?
Dang!
If Sari had just realized that, we'd not be in the mess we are in today over that HAGAR offspring lineage!