Okay Fredricks, let me put it to you this way.
If St. John taught his disciples a certain thing and they in turn became the bishops of churches after he died and in fact gave their lives for what they believed and we have copies of letters from them today that spell out some of those things, and they are very distinctly Catholic teachings, that line up with passages of the New Testament, then why would they not be considered verifiable historical links to the teaching of St. John, who wrote the Gospel, the epistles, and the book of Revelation? They don’t have to be infallible canon…they just have to be verifiably historical documents by those guys, (just the same as the writings of someone like Martin Luther are verifiable historical documents that tell us what he and his followers believed, even though they are not canon.)
If we accept that those writings of Luther’s give us authentic evidence of what he taught, (and we do!) then why do you not accept the historical documents of the guys who were discipled by St. John?
These documents, and many others, offer us all the more verification that what we believe and practice today is the same as what St. John taught his friends.
Examples:
catholicfirst.com/thefaith/churchfathers/volume01/ignatius06.cfm
catholicfirst.com/thefaith/churchfathers/volume01/polycarp2.cfm
Can the church that you are in say that? Does your pastor or deacons or elders even know who Ignatius of Antioch or Polycarp were? Do they know what
the Didache is and what it says?
Pax tecum,