Friend's father diagnosed with cancer not treatable

one of my closest friend's father [whom I am close to] was diagnosed with advanced cancer which is not treatable. although doctors are looking into clinical trials, but it's not looking too positive. I visited him in the hospital for the first time since his admission and he's completely deteriorating so quickly. my friend is trying to stay strong, but I know that he has the weight of the world on his shoulders. he already lost his mother to brain cancer several years ago and that all happened so quickly; from time of detection to death. now, he is back in the same position with his father. I want to provide him with love and support but want to respect his space. does anyone have experience with supporting a friend in such a situation and have any suggestions on what I can do to help? thank you.

I have not experienced what you outlined in your post but I can offer some advise. Just be there for your friend. Be there when he needs someone to talk to. Listen, do not try to offer any answers, I am sure he will ask questions but he knows that no one knows. Just be there, let him know that you care by being there. Do not be concerned about what to say. Being there will speak volumes and he will remember that more than any words that you actually say.