When I was in Albania (and it also happened to me in Africa) the electric kept going off and I had to preach in total (and I mean total) darkness...
ya know, sometimes satan is just sooo stupid that way, to imagine that a little thing like not having electricity would be able to stop the Holy Spirit.
he's tried that in our church too...generators went out on Easter Sunday morning a couple of years ago. We always have a guitarist playing an acoustic guitar along with the church band just for that circumstance. so she palyed, the drummer drummed, and we sang from memory. We opened the doors for some fresh air, called the electric company, and our pastor preached well! By second service everything was operational again.
that's not even the first time something like that has happened.
before our church was built, when we were still in the process of getting all the required permits and changes done, our pastor had to go to several meetings of the city council to get everything approved. these were public meetings where anyone with land surrounding our plot could come and ask questions or protest against the zoning changes that were needed.
One night there was a lady who owned vacant land across the street from where our church would be. She was protesting the zoning change from rural to commercial because she didn't want anything to be built across the street from her, she especially didn't want a church going up, and she was very vocal and adament about her objections to our church, our pastor, etc.
right in the middle of her rant the electric went out in the building, so the council meeting was adjourned until the electric could be restored.
When it came back on, the chairman asked if anyone else had any objections to the church building on that land, and there were no other objections. once again God trumped satan, both the town mayor and his wife joined our church, and both have been healed of cancer since then.
And this Easter Sunday, 10 years after that council meeting, we had over 3,000 people attending service at the church that she objected to, 78 people were saved, and they were praising God.