King James Version
17Wherefore be ye not unwise, but understanding what the will of the Lord is.
18And be not drunk with wine, wherein is excess; but be filled with the Spirit;
19Speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord;
20Giving thanks always for all things unto God and the Father in the name of our Lord Jesus Christ.
1 Thessalonians 5:18
18In every thing give thanks: for this is the will of God in Christ Jesus concerning you.
We should be thankful in all things and for all things because of Chist!