[RnMomof7]

Nevertheless, it seems odd that God would have a plan for salvation where events that would take place AFTER His Sacrifice would benefit some and not others. What is mean is, prior to about a hundred years ago a sizable percentage of children died in infancy or within a few years of birth, in some countries this is still the case. Today, at least in the west, this is not a real factor.

Did it seem "odd" that God would save Noah and not the rest of humanity? Or lot and not the rest of Sodom or that He choose israel out of all the nations to bless ?

The Bible tells us that God has a remnant not that he has a whole "bolt" :)

There is much that remain a part of the secret counsel of God ...we do not need to know the answer, we just need to trust God knows what is right

[wagglebee]

The Flood and the destruction of Sodom, etc. PRECEEDED Christ’s Sacrifice.

What you are describing is the notion that the rules can somehow change AFTER His Sacrifice.