The sons of Reuben the firstborn of Israel—he was the firstborn, but when he defiled his father’s bed, his birthright was given to the sons of Joseph son of Israel—so he is not reckoned as the firstborn in the genealogical record.
It is actually reported that among you there is sexual immorality, and such immorality as is not even among the pagans—that someone has his father’s wife.
Then you said, ‘Adonai our God has just shown us His glory and His greatness, and we have heard His voice from the midst of the fire. This day we have seen that God speaks with man, and yet he keeps on living.
He speaks about these matters in all of his letters. Some things in them are hard to understand, which the ignorant and unstable twist (as they also do with the rest of the Scriptures)—to their own destruction.