"So, then, let your spirit be ready. Be alert, with confident trust in the grace you will receive when Jesus Christ appears. Like obedient children, do not return to your former life given over to ignorance and passions. Imitate the one who called you. As he is holy so you, too, be holy in all your conduct, since Scripture says: Be holy for I am holy." (1 Peter 1:13-16)
*From The Christian Community Bible Catholic Pastoral Edition
The logical consequences of baptism are developed. We cannot go backward; giving in to the evils of the world would mean going back to slavery from which Christ delivered us through his blood. What follows is a call to live perfectly; not attached to the things of the present, but eager to live a useful and holy life before God, in proportion to what we have cost him.