'Thanksgiving' in the Bible

If he offers it by way of thanksgiving, then along with the sacrifice of thanksgiving he shall offer unleavened cakes mixed with oil, and unleavened wafers spread with oil, and cakes of well stirred fine flour mixed with oil.

With the sacrifice of his peace offerings for thanksgiving, he shall present his offering with cakes of leavened bread.

‘Now as for the flesh of the sacrifice of his thanksgiving peace offerings, it shall be eaten on the day of his offering; he shall not leave any of it over until morning.

When you sacrifice a sacrifice of thanksgiving to the Lord, you shall sacrifice it so that you may be accepted.