We ourselves heard this voice that came from heaven when we were with him on the holy mountain.

for as long as that righteous man lived among them, day after day he was being tortured in his righteous soul by what he saw and heard in their lawless actions

He speaks about this subject in all his letters. Some things in them are hard to understand, which ignorant and unstable people distort, leading to their own destruction, as they do the rest of the Scriptures.