John Gill's Bible Commentary Ver. 5. And offer a sacrifice of thanksgiving with leaven , etc.] 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 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.
Matthew Henry Commentary
Verses 1-5 - What is got by extortion is commonly used to provide for the flesh, an to fulfil the lusts thereof. What is got by oppression cannot be enjoyed with satisfaction. How miserable are those whose confidence i unscriptural observances only prove that they believe a lie! Let us se to it that our faith, hope, and worship, are warranted by the Divin word.
Original Hebrew וקטר6999 מחמץ2557 תודה8426 וקראו7121 נדבות5071 השׁמיעו8085 כי3588 כן3651 אהבתם157 בני1121 ישׂראל3478 נאם5002 אדני136 יהוה׃3068
