Leviticus 7:16

But if the sacrifice of his offering [be] a vow, or a voluntary offering, it shall be eaten the same day that he offereth his sacrifice: and on the morrow also the remainder of it shall be eaten:

Ver. 16. And on the morrow also.] This was not allowed in a thank offering. Lev 7:15 Hereby God would teach them, that he must be worshipped as himself appointeth, and not as they in their reason should think fit.