So the structure is:
- No one is able to come
- unless the Father draws him (this produces ability)
- and I will raise that same him -- that is, the one drawn/enabled
The one who is drawn = the one who is enabled to come = the one who is raised. There is zero grammatical space to claim that the αὐτόν of clause 3 refers to anyone other than the αὐτόν of clause 2. No Greek reader in the first century would have inferred any other referent. Not without a theological presupposition forcing something into the text that isn't there.
Logic certainly has to play its role here. I’d have no problem with your understanding if the passage said, “All who are drawn will come, and I will raise them up on the last day.”
John 6:44 can be rephrased as:
"All who come have been drawn, and I will raise them up on the last day."
This establishes a direct, firm connection at best between
those who come and those who will be raised up, not between those who are drawn and those who come. The recipe for being raised up: drawing>coming>raising. If God draws but I don’t come, there will be no raising. Thus:
“Those who come to the Father I will raise up on the last day.”
Now, even then, was Jesus meaning to be exhaustive with that requirement, or was He just concisely stating a basic principle about the means to reach God and eternal life? Does a person who comes to God need to
remain; can they
stray? And what does coming to God mean? Does it mean there will be evidence of good fruit in our lives, of love for one another? Or does it just mean that I’ve ascertained that I
believe in a certain manner?
With Scripture shedding light on Scripture, I believe there’s a gap of criteria or info left out of John 6:44, even as the principle itself is sound and true. When Jesus says in Mark 16:16,
“Whoever believes and is baptized will be saved, but whoever does not believe will be condemned”, does that mean that eternal life depends on baptism, for one? People argue it both ways.
When Jesus tells the rich young man in Matt 19:17,
“If you want to enter life, keep the commandments”, was that meant to exhaust the requirements for salvation?
When Jesus tells us in Matt 5,
“Blessed are the poor in spirit, for theirs is the kingdom of heaven” or
“Blessed are the pure in heart, for they will see God”, do those conditions exclude the necessity of faith, or can/should we read that part in?