Original sentence: The first New Testament book to treat other New Testament writings as scripture, II Peter was one of the last letters included in the New Testament canon; it quotes from and adapts Jude extensively, identifies Jesus with God, and addresses a threatening heresy which has arisen because the promised end and salvation did not occur, as had been promised, in the time of the first generation of believers
Edited sentence: The first New Testament book to treat other New Testament writings as scripture, II Peter was one of the last letters included in the New Testament canon; it quotes from and adapts Jude extensively, identifies Jesus with God, and addresses a threatening heresy which had arisen because the end and salvation did not occur, as had been promised, in the time of the first generation of believers