This Protestant argument/s is perennial–where in Scriptures?
The problem with their argument is that Scriptures do not tell you “only found in Scriptures.”
Look at St. Paul’s admonition to Timothy:
14 But as for you, continue in what you have learned and have become convinced of, because you know those from whom you learned it, 15 and how from infancy you have known the Holy Scriptures, which are able to make you wise for salvation through faith in Christ Jesus. 16 All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, 17 so that the servant of God may be thoroughly equipped for every good work. (2 Timothy 3)
Do you see the first declaration? It does not speak about Scriptures but about the source of his instruction: Oral Instruction.
Then it speaks about a long-life learning process–Timothy did not one day wake up with a burning ‘the Holy Spirit’ has guided me to… he was instructed as a child and he is being urged to remain loyal to that learning.
Then St. Paul addresses the Holy Scriptures… well not what we know as the Holy Scriptures since the New Covenant Writings would not take place till many years after Jesus’ Ascension and the Writings will remain sporadically shared/studied through out the first few decades of the Church’s infancy.
Finally we are offered the very first issue again: the Word of God as a training tool.
We have definition of the Oral Teachings (Oral Tradition) for decades before the Gospels and other New Covenant Writings are put to ink and disseminated through out the Church.
This, inevitably, brings us to function. The Unfolding done by the Holy Spirit (St. John 16:12-15) will take place as the Church grows and matures; it took them at least three years to go from those of the Way to Christians… yet, not once is there a mention that Jesus followers will become known as those of the Way nor as Christians in any of the Old Covenant’s Writings and it is only but a footnote in the New Covenant’s Writings:
26 And they conversed there in the church a whole year; and they taught a great multitude, so that at Antioch the disciples were first named Christians. (Acts 11)
Now, I know that it is difficult for non-Catholics to appeal to reason (outside of their own) but is it reasonable to ascertain that this issue of who the Disciples were was part of their Ministry (‘who are they’ or ‘what do you call yourselves’ or ‘no, they are not Jews, they are…’) or are we to either reject the term Christians, since there’s no Biblical precedence to this one-time mention in Acts, or are we to believe that this just happened to be coined by some heckler and it stuck?
Doctrine and Definition is part of the Unfolding!
Maran atha!
Angel