Even if you believe homosexuality is a sin it's still hypocritical of them to condemn gay people while expecting people to forgive them when one of their tribe does something wrong. They should either live and let live with regards to LGBT people or accept the condemnation of others for their (actual) sins
“The larger the group, the more toxic, the more of your beauty as an individual you have to surrender for the sake of group thought. And when you suspend your individual beauty you also give up a lot of your humanity. You will do things in the name of a group that you would never do on your own. Injuring, hurting, killing, drinking are all part of it, because you've lost your identity, because you now owe your allegiance to this thing that's bigger than you are and that controls you.” - George Carlin