Knowing all of these things, what is your only comfort in life and death? That I with body and soul, both in life and death, am not my own, but belong unto my faithful Savior Jesus Christ; who, with his precious blood, has fully satisfied for all my sins, and delivered me from all the power of the devil; and so preserves me that without the will of my heavenly Father, not a hair can fall from my head; indeed, that all things must work together for my salvation, and therefore, by his Holy Spirit, He also assures me of eternal life, and makes me sincerely willing and ready, from this day forth, to live unto him.

Matthew 10:28–31; Romans 8:28–30