In everything give thanks: for this is the will of God in Christ Jesus concerning you.
1 Thessalonians 5:18
15And let the peace of God rule in your hearts, to the which also ye are called in one body; and be ye thankful.
16 Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord.
17 And whatsoever ye do in word or deed, [do] all in the name of the Lord Jesus, giving thanks to God and the Father by him.