One of the most essential doctrines of Protestantism is sola scriptura, the belief that Scripture is the only infallible authority by which all doctrines and practices must be checked against an aberrant form, referred to as either solo scriptura or sola scriptura extremis, states that all doctrines and practices must be from the Bible itself in origin, though in practice, this means that one's interpretation of Scripture is the only infallible authority by which all doctrines and practices must checked against.
However, there is a major problem with this doctrine:
It is neither Biblical nor was it held to by the early Christians.
Obviously, if a doctrine claims that all doctrine must be checked against the Bible, that doctrine must adhere to that very same test. Yet that is lacking in sola scriptura. Of course there are verses that are put forth as supporting the doctrine of sola scriptura, but do they really?
Now these were more noble-minded than those in Thessalonica, for they received the word with great eagerness, examining the Scriptures daily to see whether these things were so. (Acts 17:11)
This is one of the more common verses offered in support of sola scriptura, but it doesn't actually teach sola scriptura. It is indeed praise worthy to search the Scriptures, especially when one is claiming that Biblical prophecy is being fulfilled.
However, this verse in no way condemns Tradition nor does it support the "Only and final" requirement of sola scriptura.
Epiphanius of Salamis;
"It is needful also to make use of tradition, for not everything can be gotten from sacred Scripture. The holy apostles handed down some things in the scriptures, other things in tradition"
(Medicine Chest Against All Heresies 61:6).
"Paul commands, 'Therefore, brethren, stand fast and hold the traditions which you have been taught, whether by word or by our letter' [2 Thess. 2:15].
John Chrysostom;
From this it is clear that they did not hand down everything by letter, but there is much also that was not written. Like that which was written, the unwritten too is worthy of belief. So let us regard the tradition of the Church also as worthy of belief. Is it a tradition? Seek no further" (Homilies on Second Thessalonians).
Tradition is Biblical, Sola Scripture is not Biblical.
Peace