I hate the thought of not talking with my only sibling before I depart, but what she is doing almost seems demonic. Who tries to get their dying brother to abandon his belief in God as they are dying? It makes me angry, sad and every emotion all at once. We stopped speaking over 10 years ago because she is evil. I began speaking with her again in January, only to explain the Bible, Jesus, his love and Heaven. At first she would ask questions, then I began hearing she was making fun of my beliefs. Now she is almost mocking them. I tried with everything I had to make my family a family again. It didn't work. Now I just feel dumb for trying, or expecting someone to understand. She grew up in church. She knows the Bible stories. She's never known Jesus though and does t seem to want to. It is maddening to me as I just want the entire family in Heaven someday.
Dan, I have an older sibling who is pretty much psychotic (he's into the occult) and hates the Lord. I tried over the years to reach out to him, but he would play sick games. Without going into too much detail, he severed the ties in a brutal and horrific manner (physical damage as well as emotional), and literally destroyed my family.
As much as we and the Lord don't want someone to end up in hell, we cannot change their heart toards God or anyone else. If your sister is mocking your beliefs, you are not required to be part of her life, and she is not entitled to be part of yours.
Just because someone is related by blood doesn't mean they are "family".
I know that thought hurts, and you just want everybody to be with the Lord in eternity Dan. That's not wrong, but if she insists on her way, there's really nothing to be done aside from prayer and leaving it to the Lord. Some folk are just going to insist on a destructive path; what we can do is pray that the Lord use her circumstances to bring her to a point where she realizes that her ways are failing her.