“First, the issue is not that Christians are acting like an economic transaction with a homosexual is spiritually defiling. It is not. If I had a hardware store, I would be happy to sell a hammer to a homosexual. I would be happy to sell a hammer to a homosexual couple who were going to use it to hammer up the crepe paper bunting at the reception. I don’t care. They give me ten bucks, I give them the hammer, and I am not contaminated by the exchange. If I sold them some cotter pins, I might feel an urge to explain them, but would be happy to sell them.
“The earth is the Lord’s and the fullness of it. The apostle Paul teaches us explicitly that we are not entailed in the sin when we live in the same world with unbelievers, rub shoulders with them, and do business with them (1 Cor. 5:10). I think Christians should be happy to do business with homosexuals. No problemo, as we bilingual people say.
“But doing business is not the issue here. Christian photographers, florists, caterers, etc. are absolutely right to refuse to do such events. And the reason for this is the reason these professions are being singled out in these court cases in the first place. This is not about economic exchange, but is rather about mandated social approval. The demand is we must all applaud.
“And is the reason why photographers and florists are going to be at the center of this next round of fights. The homosexual agenda is not to make us do business with them. The point is to make us approve of them.
“You see, a good wedding photographer’s job is to make the event glorious, to make it look good. His job is to make the couple look happy — when his God, his Bible, his church, his wife, and his conscience all tell them that they are unhappy and miserable by definition. When he does his job well, he adorns the event. In order for him to show up and adorn such an event as this, he has to violate his conscience in order to do so. The issue is not the camera, the issue is the celebration. Some Christians think we must be absolutely separate, and think that it would be morally problematic to sell them the hammer — for is that not “enabling” them? Well, yes it is, but the apostle Paul told us not to worry about enabling. He said that we had to draw the line at approving. This is why we must not fellowship with anyone who calls himself a brother and is living immorally (1 Cor. 5:11-13). To do that would communicate approval, Paul says we must not.”
(Douglas Wilson, “The Hamfisted Jackboot” , Blog and Mablog)