3 My loved ones, while my thoughts were full of a letter which I was going to send you about our common salvation, it was necessary for me to send you one requesting you with all my heart to go on fighting strongly for the faith which has been given to the saints once and for ever.
4 For certain men have come among you secretly, marked out before in the holy Writings for this evil fate, men without the fear of God, turning his grace into an unclean thing, and false to our only Master and Lord, Jesus Christ.