God desires that all men be saved. We know, however, that not all men are saved. God provides sufficient grace to all for salvation, but not all accept God’s gracious gift. Likewise, God gives particularly efficacious grace to the elect unto their salvation.
In one case the efficacious grace brings about salvation, but in another that same grace may only be sufficient. Each person is different. Judas is a great example. Judas was given an extraordinary amount of grace. He was “chosen” by Jesus. The term chosen in this case is derived from the word “elect” in Greek. Likewise, Judas was one of the twelve and Jesus said that the twelve would “sit on twelve thrones judging the twelve tribes of Israel.”[Matt 19:28]
There are many other things in the gospels that were granted by grace to Judas as one of the twelve. Judas had an ample supply of grace for salvation, but God does not force us and He always allows our free will to have a place in his plan. Judas chose to betray Jesus, and did so freely and willfully. Judas could have been among the elect. Judas was given sufficient grace, but Judas was lost by his own doing.
In contrast, the other apostles remained faithful or at least returned after having been scattered at the time of Jesus’s arrest. God’s grace was sufficient and efficacious for them, and should have been the same for Judas. The other apostles chose Jesus. Judas chose to betray Jesus.
There is an element of mystery in predestination and the interplay of free will and grace is not fully understood. National Israel, as the “chosen people,” is an example of a type of predestination in God’s divine plan of salvation. The history of the Jews shows us the many times that they strayed to idol worship and failed as the recipients of the grace and status granted to them.
The book of Romans gives a pithy summary to the issue when Paul says:
Romans 6:23
“For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord.”
Sin is what we do unto death.
Salvation is what God does for us as the free gift of eternal life in Christ Jesus our Lord.
In all of this there is room for predestination for glory, but there is no room for predestination to damnation. The latter would mean that God was committing an evil act which would be against his nature.