“And regard the patience of our Lord as salvation, just as also our dear brother Paul wrote to you, according to the wisdom given to him, speaking of these things in all his letters. Some things in these letters are hard to understand, things the ignorant and unstable twist to their own destruction, as they also do to the rest of the scriptures.”
2 Peter 3.15-16
Peter’s reference to Paul’s letters indicate they were widely read and highly regarded as inspired Scripture early on.
To what does “these things” refer that Paul wrote about in all his letters?