If you translate word-for-word in Acts 6:2, you miscommunicate. The Apostles were not wanting to stop being waiters, they weren't asking to stop “waiting on tables.” They understand that their "service" is different." They understand that their "service" is different.
When the woman answers Jesus, "Yes, Lord," is she agreeing or disagreeing? Most translations use an adversative like "but" for the following γάρ even though that gloss does not appear in the lexicon. Are they right to do so?