The Holiday of Thanksgiving might be over, but as Christians we know that we should have an "attitude of gratitude" all year round. In an attempt to foster gratefulness in my children, we already say something we are thankful for every morning on the way to school. Lately, though, I've been thinking we can do more than that. In the Old Testament, the Israelite people made peace offerings, including offerings of thanksgiving (Leviticus 7), and out of that the term "sacrifice of thanksgiving" came into being. While it sometimes referred to the actual offering of an animal and leavened or unleavened bread, the phrase also came to signify the many ways we can express our thankfulness to God.
One way we can offer God a sacrifice of Thanksgiving is to pray. In the 116th Psalm, David expresses this love and thankfulness for the many ways God has saved him.