***1 Peter was written in Pauline style to pacify the rift between him and Peter. 1 Peter is distinctly Pauline in character and language.***
You said NO one taught or KNEW it, other than Paul. 1st and 2nd Peter were NOT written by Paul, so, obviously, you are wrong. Admit it.
1 and 2 Peter were written decates after the Epistles. You said it was in the epistles. At that time 1 and 2 Peter did not exist. I was asking what did other Apostles teach, before anything was written, or while Paul wrote the Epistles, given that none of them mentions sanctification. Stop obfuscating the issues.