1:17 But you, my dearly beloved, be mindful, etc: He now exhorts the faithful to remain steadfast in the belief and practice of what they had heard from the apostles, who had also foretold that in aftertimes (lit. in the last time) there should be false teachers, scoffing and ridiculing all revealed truths, abandoning themselves to their passions and lusts; who separate themselves from the Catholic communion by heresies and schisms. Sensual men. . .carried away and enslaved by the pleasures of the senses.