Yet Paul is clearly talking about what he is WRITING being the instructions on how to behave in the Church - correct?
IN other words, this is a section of the canon of the New Testament which endorses the use of this WRITTEN letter we are reading - inspired by the Holy Spirit - written down by Paul == to instruct the CHURCH on how it is to conduct itself.
Correct?
Of course, and we have many other passages of scripture that endorse the use of the scripture for instruction. That is not under dispute. The specific canon of Old Testament is under dispute, the relationship between the Scripture, the Church, and the Tradition is under dispute, and self-sufficiency and perspecuity of scripture is under dispute.