When one claiming to be christian steps forward speaking error, it is the perogative of every christian who knows better to correct it. Do you not know the scriptures? As for defining a relationship. Nah, that isn't what this is about. You define your own relationship with Christ by your actions. I'm just the guy standing here warning you that giving dead weeds to your gal in place of flowers will get you decked. If you ain't got any more sense than to rebuff correction, the black eye is all your's baby. All yours. I love ya; but, that's a butt woopin only you can take.
Those who choose to observe the Lord's Supper in the manner prescribed by the Apostle Paul, may offend you personally, but they, none-the-less, base their practice upon Scripture.
Those who observe in the manner prescribed by Jesus, Paul and the rest of the Apostles from day one do not give offense. Those that blaspheme the Lord by uttering things they know not what tends to ruffle my feathers. But I would be in error not to tell you. And thus you've been warned. Henceforth, what you do, you do in full understanding that you commit blasphemy against God in so doing. You had the opportunity placed before you and are therefore responsible for it. The rest is between you and your maker.
Oh, and one last point. Satanists base their practices on scripture. Just something of comfort for you to ponder. Enjoy.