Some sociologists suggest that older people may be more prepared for death because of their age. That may be so; but it really isn't much consolation when someone loved dies. In fact, many older people may be more lonely because they have fewer friends and they have limited ability to get out and around. They have fewer options for social life and activities. It may even be hard to get to church or other activities they have always done. Older people may not wish to ask for help because they are afraid of imposing.
Your offer of a ride to the store, a visit to a friend or church, help in straightening out paperwork or help with some household chores will often be happily accepted. While you are with them you can make it a point to listen if they wish to tell you about their loss. You can not make grief go away but you can help make it easier to bear.