Romans 14:21 says, "It is good neither to eat meat nor drink wine nor so anything by which your brother stumbles or is offended or is made weak", so if one of my Christian buddies is doing something that causes me to stumble then they should stop? And if they don't, what will be their consequences?
Since God said we should not kill, is it not a sin when born again Christians in Military services do so?
What does it mean when Jesus says you must eat my body and drink my blood?
