Most of us are blessed with abundance. We should be generous with that which God has given us. Healthy tipping is thus a matter of evangelistic witness and wise stewardship.
Generous tipping can reinforce positive conversations with servers. If we are kind to servers, and if we speak with graciousness and gratitude toward them, our witness is reinforced when we tip generously.
Poor tipping can be a negative witness that takes time to overcome. A few years ago, several people in my organization went to lunch together. They tipped very poorly. The server wrote on Facebook about these employees with clear reference to our organization. Our witness was thus compromised with the server and with the public in general.
I have little patience with those who are stingy to servers. If we can afford to eat out, we can afford to tip generously. Church leaders would do well to remind their members about this often-neglected topic of witness in the community.
By the way, the older pastor in the story I began above went back to the restaurant and apologized to the server. He also left her a 100 percent tip.