Firing him is discrimination. You should hope he doesn't sue. He will win. The United States was founded on the premis of "Freedom of Religion" which means "Freedom FROM Religion" as much as any other definition.
Get a sub when your "Manager" wants to pass off doing favors for his church as a gig of some sort. Firing him just shows clearly that your manager is fully supportive of intolorance.
-eSmith.
Our Canadian friend and would be scholar of the U.S. Constitution and the First Amendment?


Or are you a U.S. citizen living in Canada? All well intended kidding aside, I'm against both religious and secular tyrannies by the way, but freedom from general exposure to religion in the general discourse of conducting one's life and business in the American culture and society at large isn't in our Constitution. Forcing someone who is unwilling to participate in worship or serve a religious interest they have no desire in doing so, is a different matter entirely.
Such compulsion is wrong. As a person of faith by choice myself, I would never compel anyone to do such a thing. On the other hand if one were a general employee for a business interest that deals with the public, say a delivery person, who refused to deliver packages addressed to a church or synagogue, or maybe a family of a particular religious faith they disagree with, they should be fired. The question here is the gig going to be as hired entertainment, or is it being asked to perform or aid in some faith based agenda? Christians by the way are legally free as citizens to hire secular entertainment, if they choose to do so. My secular band has done such a gig, and the only religious thing about the gig was that it was in a church building, and we did our standard set lists: The same songs we play in secular venues. Nobody preached, prayed, or passed out tracts, or whatever. The folks were appreciative and nice, and money from christians spends the same as everyone else's.
As for the drummer not taking the gig for personal reasons I applaud him, if indeed he's making a stand, from which he feels that he cannot compromise, for his personal beliefs in regards to matters of his liberties of conscience that all citizens of the U.S. have under the First Amendment, be they religious or not. With that said, sometimes making a stand can come at a cost. I've made stands that have offended some of my fellow Christians, and I've had my share of differences with non-religious people as well, that have cost me some at times; but I feel better having made a stand on those things I just can't compromise on. I wouldn't have fired him, but would rather have hired a sub based on the initial points of the OP's post.