Suppose you were good friends with a couple who were faithful in church, former druggies who came to know the Lord. They led many to the Lord, occupied the deaconship, taught Sunday school, had lots of Christian fruit. You hadn't seen them in months and were invited to their house. You went over to visit with them, to find them smoking cigarettes and drinking scotch and beer (not necessarily mixed.) You finished out the evening with them. Should you continue to see them socially?