1 Thessalonians 5:23-24:

And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ.
Faithful is he that calleth you, who also will do it.

Notes on 1 Thessalonians 5:23-24:

This verse shows you that you have three parts – spirit, soul and body.  Some people think that spirit and soul are interchangeable terms for the same thing, but that cannot be true because the Word of God is able to divide soul and spirit (Hebrews 4:12).

This passage shows that God is able to preserve your body as well as your soul and your spirit!

See also:

Who You Are and What You Have
Objection: Healing Cannot Be in the Atonement Because Healing Can Be Lost, but Salvation Cannot Be Lost