When you visit someone who is ill, you could be doing that person a great service – maybe even save that person's life. You can give hope and encouragement or help with practical matters, that they could not do on their own. You might be able to find out that this person needs the type of medical attention that he would not be able to receive on his own, or he might not have realized that he needed to do more than he is doing.
Go out of your way to find people who are ill, who would greatly appreciate your visit. If you cannot visit someone in person, call him up and wish him well, or write and let him know that you are thinking about him and care about his welfare.
(Growth Through Tehillim: Exploring Psalms for Life Transforming Thoughts, p. 99)