How to get someone to quit smoking?

My father just had his 4th or 5th heart attack yesterday. He is facing surgery tomorrow. After the last surgery, the doctor told him he had to quit smoking or else he would see him for surgery within the next 2 years. He refuses to quit. I dont know how to get him to quit. I want him around to see my 3 yr old gradute High School, get married, and have her own kids. How can i convince him to quit smoking? I love him and dont want to lose him to something that could of been prevented. Thanks in advance for any suggestions.