פּירוש אויף ישעיהו 66:3

brings a gift of violence Heb. מְבָרֵךְ, blesses Me with a gift of violence, brings a gift of violence. This is its explanation, and the expression of בְּרָכָה applies to a gift that is for a reception. Comp. (Gen. 33: 11) “Please take my gift (בִּרְכָתִי).” Also (supra 36:16), “Make peace (בְרָכָה) with me and come out to me.”

He that killeth an ox, etc. I look to him that trembleth at my word, not to those that sacrifice burnt offerings, and at the same time act badly; for he that killeth an ox, מכה איש is as guilty as if he slew a man; it is considered as murder on his part, because the offering is not brought properly; or is guilty as if he struck a man, not killing, but hurting and wounding him;²Comp. והכה איש את רעהו וגו׳, and one smite another with a stone, or with his fist, and he die not. Ex. 21:18.

they, too, chose their ways They desire these evil ways, and I, too, will choose and desire their mockeries. Now if you ask the meaning of גַּם, too, so is the style of the Hebrew language to say twice גַּם one next to the other. Comp. (Deut. 32:25) “Both a young man and a virgin (גַּם בָּחוּר גַּם בְּתוּלָה)”; (I Kings 3:26) “neither mine nor yours (גַּם לִי גַּם לָךְ)”; (Ecc. 9:1) “neither love nor hate (גַּם אַהֲבָה גַּם שִׂנְאָה)”; (Num. 18:3) “and neither they nor you shall die (גַּם הֵם גַּם אַתֶּם).” Here, too, both they chose and I will choose.