With what indignation, then, must the Lord look down upon that apostate harlot, called the Romish Church, when, in all her sanctuaries, there are pictures and images, relics and slivines, and poor infatuated beings are even taught to bow before a piece of bread. In this country, Popish idolatry is not so barefaced and naked as it is in other lands; but I have seen it, and my soul has been moved with indignation like that of Paul on Mars’ Hill, when he saw the city wholly to idolatry; I have seen thousands adore the wafer, hundreds bow before the image of the Virgin, scores at prayer before a crucifix, and companies of men and women adoring a rotten bone or a rusty nail, because said to be the relic of a saint.

It is vain for the Romanist to assert that he worships not the things themselves, but only the Lord through them, for this the second commandment expressly forbids, and it is upon this point that the Lord calls himself a jealous God. How full is that cup which Babylon must drink; the day is hastening when the Lord shall avenge himself upon her, because her iniquities have reached unto heaven, and she hath blasphemously exalted her Pope into the throne of the Host High, and thrust her priests into the office of the Lamb. Purge yourselves, purge yourselves of this leaven. I charge you before God, the Judge of quick and dead, if ye would not be partakers of her plagues, come out from her more and more, and let your protest be increasingly vehement against this which exalteth itself above all that is called God.

Let our Protestant Churches, which have too great a savoar of Popery in them, cleanse themselves of her fornications, lest the Lord visit them with fire and pour the plagues of Babylon upon them. Renounce, my brethren, every ceremony which has not Scripture for its warrant, and every doctrine which is not established by the plain testimony of the Word of God. Let us, above all, never by any sign, or word, or deed, have any complicity with this communion of devils, this gathering together of the sons of Behal: and since our God is a jealous God, let us not provoke him by any affinity, gentleness, fellowship, or amity with this Mother of Harlots and abominations of the earth.

Charles Spurgeon, A Jealous God, March 29, 1863