How do I explain obligatory fasting and abstinence?
I have a lunch date scheduled with a co-worker on Ash Wednesday. Church rules, however, state that I am obliged to fast. If I attend, am I allowed to eat anything? If I cancel, how do I explain this act of obedience to my christian but non-catholic friend so as not to sound legalistic? We happen to be in a lunchtime bible study at work, so this issue may be a good apologetics opportunity.