George Gillespie, one of the Scottish Commissioners to the Westminster Assembly, and one of the greatest theologians since the days of the Apostles, writes,
“By communicating with idolaters in their rites and ceremonies, we ourselves become guilty of idolatry; even as Ahaz, 2 Kings 16:10, was an idolater, eo ipso, that he took the pattern of an altar from idolaters. Forasmuch, then, as kneeling before the consecrated bread, the sign of the cross, surplice, festival days (like Christmas-ed.), bishopping, bowing down to the altar, administration of the sacraments in private places, etc., are the wares of Rome, the baggage of Babylon, the trinkets of the whore, the badges of Popery, the ensigns of Christ’s enemies, and the very trophies of antichrist, — we cannot conform, communicate and symbolise with the idolatrous Papists in the use of the same, without making ourselves idolaters by participation.
Shall the chaste spouse of Christ take upon her the ornaments of the whore? Shall the Israel of God symbolise with her who is spiritually called Sodom and Egypt? Shall the Lord’s redeemed people wear the ensigns of their captivity? Shall the saints be seen with the mark of the beast? Shall the Christian church be like the antichristian, the holy like the profane, religion like superstition, the temple of God like the synagogue of Satan?” (A Dispute Against English Popish Ceremonies, in Gillespie’s Works volume one, p. 80, SWRB reprint, or as free MP3s at A Dispute Against the English Popish Ceremonies emphases added).
Listen to the teaching here: http://www.sermonaudio.com/sermoninfo.asp?SID=715111534397