For a thanksgiving; for mercies received. See Leviticus 22:29 2 Chronicles 29:31, 2 Chronicles 33:16.
Related Commentaries of Leviticus 7:12
Leviticus 7:12
12 If he offer it for a thanksgiving, then he shall offer with the sacrifice of thanksgiving unleavened cakes mingled with oil, and unleavened wafers anointed with oil, and cakes mingled with oil, of fine flour, fried.