Whatever you do; don't say the words 'I am sorry'; I don't know about anyone else, but when my grandmother died, I just got so sick of everyone saying I'm sorry, I'm sorry, I'm sorry. So don't do that; I guarantee several someone elses said it at some point or the other.
Try talking about good times you had with him, or things about him you found funny or made you smile or were just unique to him. I find that in the face of grief, people will forget the little things, and remembering them helps look on the bright side, as in to remember him for his life, not death.
And above all; be yourself. Don't skirt around death like its contagious - it's not. It really is true that laughter is the best healer :-)
Try talking about good times you had with him, or things about him you found funny or made you smile or were just unique to him. I find that in the face of grief, people will forget the little things, and remembering them helps look on the bright side, as in to remember him for his life, not death.
And above all; be yourself. Don't skirt around death like its contagious - it's not. It really is true that laughter is the best healer :-)