1 Thessalonians concludes with a to do list of 15 commands for the believer and then states that God is faithful and He will do it. Seems like a contradiction but it is actually the key to growing in our faith.
Colossians 3 is all about getting the Kingdom into our lives while
pushing out the corrupt culture. The longest practical application is not to
marriage or parenting but to our jobs as bosses or bondservants. How we work is
one of the greatest ways we demonstrate that our lives are lived for a different
kingdom and our priorities are set by a better King.