Amos 4:5

And offer a sacrifice of thanksgiving with leaven ,.... Which some observe was contrary to the law, which forbids all leaven in a meat offering; or "burning" it in any offering, Leviticus 2:11 ; which the word F20 קטר "incendendo", Munster, Tigurine version; "incendito incensum", Vatablus. here used suggests was done by these idolaters, as well as eaten by them, their priests not liking to eat unleavened bread; but; though it was forbidden in the meat offering, was allowed, yea, ordered, with the sacrifice of thanksgiving, Leviticus 7:13 . So Abarbinel understands it here, as what was according, to law, but ironically commanded to be offered to idols:

and proclaim and publish the free offerings ; let all know of them when you make your freewill offerings, and invite them to partake of them:

for this liketh you, O ye children of Israel, saith the Lord God ; or ye love to offer such sacrifices to your idols, rather than to the Lord God; preferring these to him, and delighting more in the worship of them than of him.