A.T. Robertson Commentary 1 Thessalonians 5:18

"in everything give thanks: for this is the will of God in Christ Jesus to you-ward." — 1 Thessalonians 5:18 (ASV)

In everything give thanks (εν παντ ευχαριστειτε). There is a silver lining to every cloud. God is with us whatever befalls us. It is God's will that we find joy in prayer in Christ Jesus in every condition of life.