With these facts, he has a slam-dunk case for hostile work environment, harrassment and termination based on his religious beliefs. These rules apply to private employment.
If he were Muslim, they would never have dared to do what they did. The only way for Christians not be victims of persecution in this situation is to sue immediately. There should also be a boycott organized against Brookstone for its promotion of an anti-Christian work environment.
First of all, we do not know if the information presented in this article is indeed factual. Instead, it is simply one person's account of what occurred.
And the company is well within its right to terminate an employee due to his religious beliefs, if those beliefs cause him to denounce a co-worker's marriage.
For example, if there were an employee who held the religious belief that blacks and whites should not be married and that person denounced a co-worker who was in an interracial marriage, the company would be well within its right to fire that employee due to his voicing of his religious beliefs.