That is quite odd since the children of Israel who rejoiced in God after fleeing Egypt...
Is this revisionism? I see no rejoicing. And you contradict God when you say that because He tells you that He did not give them eyes to see or ears to hear so how could they hear and see? You contradict God with what you say.
(that is but one example of many where people rejoiced to and for God but were still at enmity with God.
The straws you are clutching at would have been useful to the slaves making the bricks.
DT 29:2 Moses summoned all the Israelites and said to them: Your eyes have seen all that the LORD did in Egypt to Pharaoh, to all his officials and to all his land. 3 With your own eyes you saw those great trials, those miraculous signs and great wonders. 4
But to this day the LORD has not given you a mind that understands or eyes that see or ears that hear. A contradiction on your part.
We even know that Pagan Nations proclaimed Him as God of Gods and rejoiced.
How can nations proclaim anything? How can nations rejoice? If you mean pagans can worship God then that is not Christianity pure and simple.
Surely many people will rejoice at the coming of their Lord and find that He was never their Lord to begin with.
That some false Christians will have a rude awakening that is not doubted but the idea that a false Christian can rejoice in the Lord is a denial of scripture isn't it? the sinful mind is hostile to God. It does not submit to God's law, nor can it do so.
We are not born justified or saved. The wrath of God abides on even the redeemed until they repent and believe.
John was saved in the womb.

It is Calvinist theology that the children of the children of God and their children are saved. Eze 37:25 They will live in the land I gave to my servant Jacob, the land where your fathers lived. They and their children and their children's children will live there forever, and David my servant will be their prince forever.
Acts 2:39
The promise is for you and your children and for all who are far off--
for all whom the Lord our God will call."
The promise is for me and my children and those others chosen by God. If He calls all men then He will save all men because of the promise not because of the call. AC 16:31 They replied, "Believe in the Lord Jesus, and you will be saved--you and your household."
ALL those hearing will be saved...ALL of their children will be saved... and ALL those afar off... as many as God will call.
Where's the problem?
We are written in the book of life from the foundation of the world but that does not mean you are saved from the foundation of the world.
Don't you think God is omniscient Allan? Would God really write everyone's name in the book when He knew who would not be saved, and erase them when?
The OT saints had obtained salvation but could not partake in the full benifits due to their sins only being covered and not fully atoned for...
Never heard of it man. A new way is it? A new revelation? Abraham is the father of the faith. Next thing you will be telling me is that they did not go to Heaven before Christ died.
I would like to see the scripture that states we are saved from the foundation of the world...
Eph 1:4 For he chose us in him before the creation of the world to be holy and blameless in his sight. In love 5 he predestined us to be adopted as his sons through Jesus Christ, in accordance with his pleasure and will--
john.