Hey Dan!!
Since the Bible is silent on this issue doesn't mean it didn't happen. I have to go with the early church on this. The church maintains Peter was crucified in Rome. The circumstances as to why he was in Rome are not clear. This is what I think might have happened. This is pure speculation on my part. I think Peter was lured into a trap. He was then tried and sentenced to death.
I believe that he requested to be crucified upside down for this reason: he still felt unworthy.
We cannot build a faith as a law on speculation. I believe at the most it could produce is doubt .
Not sure why anyone would feel worthy of a free gift that cost the giver his life, by His grace giving us eternal life?
Whether Peter was crucified or not does not add the gospel. Christ is not divided. Peter was not crucified for the sins of the world. The matter of death of a disciple has nothing to do with Christ sacrifice. All men die to show they lived in a corruptible body. Its why Christ calls them “bodies of death” that in the end return to the spiritless lifeless dust they were taken from.
All that God choose to reveal
is written in his book of the law that we call the Bible. Does a person need more than that which he has written/revealed.... before they can believe Christ to the salvation of your soul? If so how much more is enough? One more word or would a thousand more not be enough?
There are no oral traditions of men as mere theories in the Bible. . He condemned the oral traditions of men over and over. In fact every time Peter denied Christ it showed he was following the oral traditions of the fathers... as the things of men that do offend the things of God ‘s living, abiding word.. He denied Christ the first time by rebuking the lord of Glory and saying not to work out the gospel in respect to His death and Peter performed that again and again to show he was walking after the wrong manner of spirit (walking by sight) .
One oral tradition coming from Peter is found in John 21...This is right after Christ had reinstated Peter having forgiven His lies.
Peter started a new oral tradition that John would not die as a continuing belief Peter had in a hope that oral tradition of men could profit as if it was a spiritual work loosened from heaven . Making the oral tradition of men or I heard it through the grape vine, equal to prophecy (the word of God) .
Again the same reason he denied Christ in Mathew 16: pertaining to the death of that seen to show he was walking by sight according to the fathers and not exclusively by the faith that comes from hearing God, as that which is recorded in the scriptures.
In the end of the matter Christ said in regard to the work he had just finished by exposing the lie of Peter shown in Mathew 16:22 by what death he should glorify God. This is in so much that if every time Jesus had to do the work of rightly dividing the word of truth, in regard to the oral traditions of men as lies.in regard to John not dying. He supposed the world would not be able to contain his words of rebuke in respect to the oral tradition of men.
When Peter heard death of the object of his misguided faith ( Christ flesh) that he was putting his hope in, it faded. He started to look to another person to put his faith in (John to remain alive ) seeing the object of his faith must have had form.
This is something the apostles did when they did not understand, the spiritual unseen meaning. They would look among their owns selves as to “who is the greatest”. Thinking because of the oral tradition of the fathers they had the wrong man standing in from of them, as the wrong manner of spirit, walking by faith the unseen, and not as they were accustomed to ,walking sight as that seen.
Christ continually rebuked them for those kind of oral traditions of sinful men and declared to them : you know not what manner of spirit you are of, as those who do walk by sight . .
This is while Christ was still teaching Peter about faith as to how it works coming from one ( Christ) as a living hope to the one that receives it( the Christians) . Christ never gave up teaching Peter about how his faith works to both will and do his good pleasure in his disciples.
This helps us know if he has begun the good work of salvation in us as he did with Peter that he will finish it to the very end....purifying the hearts of the believers through his work of faith towards us , as a labor of His love. .
This spake he, signifying
by what death he should glorify God. And when he had spoken this, he saith unto him, Follow me.
Then Peter, turning about,
seeth the disciple whom Jesus loved following;( John) which also leaned on his breast at supper, and said, Lord, which is he that betrayeth thee?
Peter seeing him (John) saith to Jesus, Lord, and what shall
this man do? John 19 -21
Jesus saith unto him, If I will that he tarry till I come, what is that to thee? follow thou me.John 21:22
In other words saying what I do with others is not your business seeing it is causing you take your eyes off the author and finisher or the alpha and omega of faith .(Christ)
Then went
this saying abroad among the brethren,
that that disciple should not die:
yet Jesus said not unto him, He shall
not die; but, If I will that he tarry till I come, what is that to thee? This is the disciple which testifieth of these things, and wrote these things: and we know that his testimony is true.And there are
also “many other things” which Jesus did, the which, if they should be written every one, I suppose that even the world itself could not contain the books that should be written. Amen. Joh 21:19-25
The “many other things” are in lieu of the work of Christ rebuking Peter for starting a oral tradition of men that can be called; I heard it through the grape vine.
It is not teaching what the Catholics hope it means making the oral traditions of men equal to the written Tradition of God, the Bible, as if they both flowed from the same divine source, heavenly . . .