[Christians] What do you believe about other denominations of christianity?

I believe as long as you're making a good faith effort to follow the teachings of Jesus Christ then you'll go to Heaven regardless of what specific denomination you follow (There are probably exceptions, like I don't know a lot about Gnostics but they probably don't count) but I gather this is a little weird and most of you believe the other denominations are hellbound? !christians !catholics