1. 1 Thessalonians 5:18
"Give thanks in all circumstances; for this is God's will for you in Christ Jesus."
Paul commands thanksgiving "in" not "for" all circumstances - a crucial distinction. Barnes notes we can "always find something to be thankful for, even in dispensations which appear dark and frowning." Gill emphasizes giving thanks "in adversity, as Job did" and "in afflictions of every kind, since they are all for good." The phrase "this is the will of God" makes thanksgiving non-negotiable. Matthew Poole explains this means thanksgiving is "an acceptable thing to God, and such as he approves well of." Cambridge Bible clarifies God's purpose is that believers grow "perfect in thankfulness, grateful for the bitter as well as for the sweet." Barnes concludes: "Could we see all, we should see that we are never placed in circumstances in which there is not much for which we should thank God" (BibleHub Commentaries).