1 Thessalonians 5:23-24 (AMP) And may the God of peace Himself sanctify you through and through(make you pure) ; and may your spirit and soul and body be preserved sound and complete blameless at the coming of our Lord Jesus Christ (the Messiah).

Faithful is He Who is calling you and utterly trustworthy, and He will also do it( fulfill His call by hallowing and keeping you)