When I was a little boy my Dad and brother in law lived across the street from each other. At that time South Africa had elections and my Dad belonged to a political party that oppossed the one that my brother in law belonged to. I saw tha my Dad and brother in law met at the middle of the road and try to convince one the other about how wrong the other one's party is. On such ocassions they almost get into a fist fight. In that I discovered that never try to convince someone, let the Holy Spirit be the "Convincer" wehn you talk to them about Christ