2 Cor 12:14 Look! This is the third time I am ready to come to you, and I will not become a burden. For I am seeking, not your possessions, + but you; for the children+ are not expected to save up for their parents , but the parents for their children .
It's their Christian obligation to support their children. It's not the children's obligation to support the parents.
Billy, I cannot recall every thinking about that Scripture. BU2B, that really is a great scripture to show if they start trying to guilt trip you into providing for them.
You have no obligation to look after them, and even less since they will be pursuing a lifestyle that you do not support. You wouldn't give them money if you knew they were going to use it gambling, it is the same that they want to use it support of lifestyle of preaching something you do not agree with. Don't feel guilted into providing for them.
This is a good test of your fade. Remember, if you get disfellowshipped they will stop talking to you overnight. They love the religion more than you. Don't give them money to grow that religion.