Yes, it should be a crime
No, religious freedom should be preserved
It's against every religion to be homosexual. They shouldn't have to be forced to do something that is counter to their faith.
A *crime*? This has to be a complete joke. Every person has religious freedom, and just because a church believes in the universal definition of marriage that has only recently changed over the last few decades does not mean they should be thrown in jail.
Should a Muslim be forced to sell bacon? And if he doesn't, should he face legal consequences. Should Muslims be forced to participate in a Christian marriage. If they do not should we press legal charges?
Definitely not. Most religions are homophobic, ditto for most of the denominations and sects withing them. If a church deems it to be unacceptable to perform a gay marriage then they should not be forced to do it, it's against the principle of separation of church and state.
Freedom of association.
Don't push your morals on them and make them do something that is against their religion. That's a threat to their freedom of religion.
It's not the church's fault. It's the fault of either the government or the people that perform bigotry.
If someone doesn't believe in something, you can't force your opinions onto them.
That would be discrimination against an entire religion.