A lot of you are new here, newer than 2017, when I last reran this post; so I thought it might be worthwhile to run it again.
A certain famous radio host, when it looked like a hurricane was coming, used to urge his listeners to pray together–explaining that the “spiritual power” of their massed prayers would actually turn the hurricane aside. Not God’s power. Theirs. Not God’s sovereign mercy. Their power.
If you’re new to Christianity, please trust me: that ain’t how it works.