From the Quiet Friary

That divine power of his has freely bestowed on us everything necessary for a life of genuine piety, through knowledge of him who called us by his own glory and power. By virtue of them he has bestowed on us the great and precious things he promised, so that through these you who have fled a world corrupted by lust might become sharers of the divine nature.
This is reason enough for you to make every effort to undergird your virtue with faith, your discernment with virtue, and your self-control with discernment; this self-control, in turn, should lead to perseverance, and perseverance to piety, and piety to care for your brother, and care for your brother, to love.
Qualities like these, made increasingly your own, are by no means ineffectual; they bear fruit in true knowledge of our Lord Jesus Christ. Any man who lacks these qualities is shortsighted to the point of blindness. He forgets the cleansing of his long-past sins.
Be solicitous to make your call and election permanent, brothers; surely those who do so will never be lost. On the contrary, your entry into the everlasting kingdom of our Lord and Savior Jesus Christ will be richly provided for.
St. Peter