As a Mississippi student minister preached at a youth centre, the wooden floor started to rumble and quickly collapsed, sending about 70 people tumbling to the first floor below.
About 35 people were injured in the collapse on Wednesday night, with most suffering cuts and broken bones. None of the injuries was considered life-threatening.
"We were blessed by the Lord," Pastor Tommy Davis said on Thursday.
"we are getting all the inspections done to a get a better perspective about what happened Wednesday night."
County Fire Council spokeswoman said an area of about 10m by 12m had collapsed in like a funnel.
Witnesses reported hearing a low rumble before the floor gave way as student minister Kevin Price gave a sermon.
"Kevin was preaching on everything we own isn't our own," Tori Hodge, 18, told The Chronicle newspaper.
"Everybody heard it. The floor started crumbling and waving. People started falling through the ceiling, just like you'd see in a movie."
The floor is above a kitchen area, with a drop of about three and a half metres.
