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He didn't "get" it, either (a thing that Martin Luther himself got). Recently, I chronicled equally clueless arguments along the same lines from Protestant "reformers" Calvin, Zwingli, and Bullinger.
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I. First, let us enquire, WHAT IS THIS CROSS OF CHRIST to which some men are sadly said to be enemies?
Of course, it is not the material cross. It is not anything made in the shape of the cross. There are some who can fall down and adore a cross of wood, or stone, or gold, but I cannot conceive of a greater wounding of the heart of Christ than to pay reverence to anything in the shape of a cross, or to bow before a crucifix! I think the Savior must say, “What? What? Am I the Son of God and do they make even Me into an idol? I who have died to redeem men from their idolatries, am I, Myself, taken and carved, and chiseled, and molten, and set up as an image to be worshipped by the sons of men?” When God says, “You shall not make unto you any graven image, or any likeness of anything that is in Heaven above, or that is in the earth beneath, or that is in the water under the earth: you shall not bow down yourself to them, nor serve them,” it is a strange fantasy of human guilt that men should say, “We will even take the image of the Son of God, or some ghastly counterfeit that purports to be His image, and will bow down and worship it, as if to make the Christ of God an accomplice in an act of rebellion against the commandment of the holy Law.” No, it is not the material cross to which Paul alludes—we have nothing to do with those outward symbols! We might have used them much more, but they have been so perverted to idolatry that some of us almost shudder at the very sight of them!
(Sermon #2553: The Enemies of the Cross of Christ; Metropolitan Tabernacle, Newington, 26 October 1884)