What is your exegetical argument here, exactly? Since the tense used in verse 39 supports your point, we should pay attention to that at the expense of any tense used in the preceding relevant verses? Surely not.
I thought my argument was pretty clear, but you snipped that part out when you quoted it, so... I guess I'll just say it again?
In John 6, Jesus is addressing a group of people that are standing in front of him. Not only is he talking
to them, but also
about them. Look at all the subjunctives throughout the chapter. He speaks of the possibility of
their salvation.
Where it says "all" and "every one" we should understand it as "all
of you" and "every one
of you" rather than "all
persons throughout history" or "every one
who will ever exist."
This is why Jesus can talk about it as a completed action just 2 verses after he posed it as something happening in the present.
To the readers: The use of the present perfect tense in verse 39 (δέδωκέν, dedoken, "has given") indicates an action that started in the past and has relevance to the present. It does not inherently rule out the possibility of future giving. From the fact that the Father "has given" some people to the Son, one cannot conclude that he has no more people to give. To underscore this point, have a look at John 10:29 (which uses the same "has given" term) and compare it with 10:16 (where we see there are more sheep to be given beyond that historical moment).
You're right, the perfect tense doesn't preclude the event happening more in the future. The context does, though. Out of the group standing in front of Jesus, some will come to him, and a minute later Jesus talks about them as having been delivered to him (the state-of-being indicated by the perfect tense word).
Trying to pull those verses out of context and re-apply them to everyone in perpetuity is the exegetical mistake.
Again,
@Wycliffes_Shillelagh said, "Perseverance isn't required because group membership is fluid. One can leave the group, in which case they may not be saved." That seems to fly in the face of what Jesus said here in John 6, that he will not lose any of those whom the Father has given him, but raise them all up at the last day. Even if
@Wycliffes_Shillelagh was right, that this is about only those the Father has given thus far, Jesus clearly indicated that this membership isn't fluid. "I shall lose none of all those he has given me," Jesus said—none leave the group and fail to be saved (i.e., their perseverance is assured).
Speaking of that group on that day, and those who were delivered to Jesus... it would be odd if Jesus were to add some to Israel, with foreknowledge that they would later be removed from it. So yes, all of those people that were there that day that believed and were added would (did) persevere.
Does that mean we can take that and apply it carte blanche to EVERY person that will come afterwards? No. It only applies to those that Jesus was talking about, and that isn't everyone.
This is not an "opportunity" for "whoever." This is the voice of the great Shepherd calling his sheep. He knows who they are. They know his voice and follow him. And the sheep are guaranteed to believe—and persevere.
Remember, John 10:26 doesn't say, "You are not my sheep because you do not believe."
There is
quite a bit written about lost sheep in the prophets and gospels. How do you reconcile the existence of lost sheep with your view that all the sheep are guaranteed to believe?
As I see it, the House of Israel was divorced by God (Jer 3) and later put to death (Eze 37) for the cause of unfaithfulness. The northern kingdom lost its standing before God as a nation. The survivors escaped into the Gentile nations around them and lost any kind of identity. Yet they were descendants of Abraham - that is to say, they were still sheep. They were lost sheep, but still sheep.
Jesus came to preach to those lost sheep and call them back into the metaphorical fold (Mat 10, 15). Why did he need to do that? Because even though they were sheep, there was no safety for them outside the fold. For dead Israel to live again, the lost sheep needed to be adopted back into the nation, re-generated, metaphorically resuscitated.
A large part of the book of John - including all the bits we've been discussing - is dedicated to Jesus teachings on how to tell who is a sheep, and who is not. That is to say, He addressed the theological question of '
who is an Israelite?' He discards the genealogies of the Sadducees, and the traditions of the Pharisees in favor of a rule that one's parentage may be determined by looking at behavior:
Jhn 8:37-39 I know that ye are Abraham's seed; but ye seek to kill me, because my word hath no place in you. I speak that which I have seen with my Father: and ye do that which ye have seen with your father. They answered and said unto him, Abraham is our father. Jesus saith unto them, If ye were Abraham's children, ye would do the works of Abraham.
There is no guarantee that every lost sheep will believe or be saved, because it is not guaranteed that every lost sheep will even
hear the message. This is the sense in which faith is a gift - the message is given, by speaking it.
Faith comes by hearing.
-Jarrod