Amós 4:5

5 Burn leavened bread as a thank offering and brag about your freewill offerings - boast about them, you Israelites, for this is what you love to do," declares the Sovereign Lord.

5 and offer a sacrifice of thanksgiving of that which is leavened, and proclaim freewill-offerings and publish them: for this pleaseth you, O ye children of Israel, saith the Lord Jehovah.