How could anyone possibly resist sin without God's grace? I we are born sinners and do not even see our own iniquity, how could we possibly repent and come to God?
No, we chose before this life. Our souls exist before we are born into this world, before we are conceived in sin. It is in this period when God fashions our spirit that God looks into our hearts and judges us. To those He elects based upon what He sees, He gives them the gift of salvation. It must be irresistable, because to claim it is not would be to deny God's sovereignty, and would mean that the elect could be swayed by the sin of the flesh.
It only says names can be blotted out by the Lamb, so you must still acknowledge that those never mentioned in the Book of Life were never going to accept God - their fates were known to Him. Not because God worked in their lives to ensure that fate as He does with the elect, but because they chose to reject Him before they were born.
However, the fact that it says names can be blotted out is interesting, and I will look into it further...
We can't really know the answer to this, but I still prefer the one timeline theory.
Indeed they are created to love and worship Him. But they rebel, just as Adam himself did. Their rebellion against God is seen before they are born, therefore they are not elected to salvation.
Is God weak because He allows this rebellion - no! He allowed Satan to rebel too remember - do you think this was because Satan was too powerful for God to handle? Ultimately, God will use such people/creatures/spirits in bringing the elect to salvation, before destroying them utterly in the Lake of Fire.
Grace is witheld for some because those people never wanted to accept it. This was before they were born and enslaved by sin, therefore God is righteous in his judgement.
Once you have been elected to salvation, grace is indeed irresistable in this lifetime.
Agreed.
Now man knows well what sin is, and must suffer the punishment for rebellion against God, if only as chastisement to be steered back to Him.
As opposed to only saints in the Catholic sense being justified and having all the benefits of a union with Christ?
Our fates on earth are predestined, based on choices we made (or perhaps simply a judgement by God) before we were born.
We were not predestined to make that choice by God (it was inevitable but He didn't work in our [pre-]lives to influence us), although he did have foreknowledge of it. Indeed, he is outwith time, he can be at the beginning and ends of its dimension at once.
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