Did I need to, point by point, outline our evening's activities? My request was that they babysit for us on Saturday evening as we were going to a concert. They didn't ask "what concert?" and I didn't tell them. My father saw an item on the nightly news about Praise Gathering and left me a voicemail stating, in a reprimanding voice, that if that's where we were going, they could not consciously babysit.
They didn't ask if that's where we were going, they stated they wouldn't babysit if it was.
Now, I could have lied and said, "what? Praise Gathering?! No! Yuck!! Of course not!". But I didn't. I took my son instead.
Conversely, I could have asked, in the email, for them to babysit while we went to Praise Gathering. If they'd objected, that's fine.
I'm thinking, "don't ask, don't tell".
All has ended well, as I've already stated; my son got to go to the concert and he loved it. My wife got to go to the concert this evening. I'm told that the Sunday evening event is the best of the three nights. We were winners on all counts. The only losers were the Jehovah's Witnesses. And yes, that's sad as I know my parents love babysitting our children. But, they made their choice.