Thanks Roger for these objections, which allow me to explain more accurately my understanding of the Multiverse.
I dare to disagree: The Multiverse, if correctly interpreted, allow us to harmonize God’s omniscience and human free will. The “parallel worlds” are “thoughts” in “the mind of God”.
If by “tested” you mean directly demonstrated by experiment on a lab-bench, then you have also to admit that God cannot be tested.
On the other hand miracles like that of the “dance of the sun” on October 13, 2017 can be considered to some extent a demonstration of “parallel worlds”: the 70’000 people gathered on Cova da Iria at 2 pm were manifestly in a parallel (but not less real) world to the world the rest of the planet inhabitants were in.
This is a very nice thought I totally share: the world we live in is in any case the best of all possible worlds because at the end God’s Kingdom happens. When heaven becomes realized on earth, the final state of the world will contain all the good and happiness that would have happen in each of all the possible worlds.
To the versions you mention you can add the version I am proposing regarding the “miracle of the sun” or the “miracle of the Israelite’s crossing the Red Sea”: People on earth splits into two groups; one group sees reality in a way (the sun dancing) and the other group in a different way (the sun following its ordinary trajectory). I think a similar explanation may apply to Noah’s Flood as well.
Be aware that also this “stream of history” has to end into God’s Kingdom. This means that even if Hitler & Co. had ruled the world (what at the beginning of WW2 in fact happened) something would have happened that thwarted their victory (as in fact happened when US entered WW2).
This is just my conviction too, and the consequence of the Multiverse, if it is appropriately interpreted.