Paul is not dealing with the doctrine of original sin in Rom 11:32 He is speaking to born again Jews. He is simply telling them that God is going to show His children in the Gentile nations, the same mercy He is showing the Jews.
Please be careful how you handle the Word of God, you don't want to arouse His wrath.
Your suggestion that God will have mercy on all of them, makes God a liar. The truth is they will beg for mercy but God will show them no mercy as He casts them into the lake of fire.
God only shows mercy to His children, the Devils children will be cast into the lake of fire with the Devil and His Demons.
The idea is God may or may not have mercy on all.
We know God shows mercy and compassion to whom He will.
And God hardens others.
Romans 9
10 And not only
this, but when Rebecca also had conceived by one man,
even by our father Isaac 11
(for the children not yet being born, nor having done any good or evil, that the purpose of God according to election might stand, not of works but of Him who calls), 12 it was said to her, “The older shall serve the younger.” 13 As it is written, “Jacob I have loved, but Esau I have hated.”
Israel’s Rejection and God’s Justice
14 What shall we say then?
Is there unrighteousness with God? Certainly not! 15 For He says to Moses, “I will have mercy on whomever I will have mercy, and I will have compassion on whomever I will have compassion.” 16 So then
it is not of him who wills, nor of him who runs, but of God who shows mercy. 17 For the Scripture says to the Pharaoh, “For this very purpose I have raised you up, that I may show My power in you, and that My name may be declared in all the earth.” 18 Therefore He has mercy on whom He wills, and whom He wills He hardens.
19 You will say to me then, “Why does He still find fault? For who has resisted His will?” 20 But indeed, O man, who are you to reply against God? Will the thing formed say to him who formed
it, “Why have you made me like this?” 21 Does not the potter have power over the clay, from the same lump to make one vessel for honor and another for dishonor?
22
What if God, wanting to show
His wrath and to make His power known, endured with much longsuffering the vessels of wrath prepared for destruction, 23 and that He might make known the riches of His glory on the vessels of mercy, which He had prepared beforehand for glory, 24 even us whom He called, not of the Jews only, but also of the Gentiles?
25 As He says also in Hosea:
“I will call them My people, who were not My people,
And her beloved, who was not beloved.”
26 “And it shall come to pass in the place where it was said to them,
‘You
are not My people,’
There they shall be called sons of the living God.”
27 Isaiah also cries out concerning Israel:
“Though the number of the children of Israel be as the sand of the sea,
The remnant will be saved.
28 For [
b]He will finish the work and cut
it short in righteousness,
Because the Lord will make a short work upon the earth.”
29 And as Isaiah said before:
“Unless the Lord of [
c]Sabaoth had left us a seed,
We would have become like Sodom,
And we would have been made like Gomorrah.”
