One of the first things I wanted to teach my children when they were just beginning to talk, was to say "Thank You". Not only is it common courtesy, but it also shows gratitude to someone for what they've done.
Today's passage goes right along with that - it's from Colossians 3: 15 which says, "Let the peace of Christ rule in your hearts, since as members of one body, you were called to peace. And be thankful".
We as believers are referred to as the body of Christ, with him being the head. We each have a part in the body, and if one part fails to do what it's supposed to do, then chaos comes into play. Our first priority is to love one another, which brings about the peace of Christ, and makes it to where we all function as one body, and lives are changed because of that. The last part of that verse is a short sentence which simply says, "And be thankful".
Do we show and/or tell the Lord daily "Thank You" for all he has done, and is continuing to do in our lives?
In I Thessalonians 5:16 - 18, it says, "Be joyful always, pray continually; give thanks in all circumstances, for this is God's will for you in Chris Jesus".
There is one very small word in that passage that has one very large meaning - "in". It doesn't say to give thanks FOR all circumstances, but IN all circumstances. I take this to mean that no matter what we face, we are to give thanks, because the Lord himself is in the midst of that with us, and he will see us through.
Take time today to thank the Lord for who he is, and for what he's done.