A Lakewood Church spokesperson told ABC News Tuesday that its doors have always been open, and the church, which does not have showers or a kitchen, is waiting for city officials to designate it as a shelter so it can obtain cots and other materials to help people.
"I know that there's been some controversy about Joel Osteen and him not opening the doors of the church", Perry said.
"There were some safety concerns, and I spoke to them on the phone, and it all made ideal sense to me", Perry continued.
Osteen is known for being the senior pastor of Lakewood Church - the biggest Protestant church in the United States.
He said he's still working out where to donate the remaining $500,000 as he wants to make sure it goes to people who have "boots on the ground" and who 'will do the right thing'.
Church spokesman Don Iloff said the church could not accept people over the weekend because of flooding on the first floor but people have now started arriving at the church.
Some 48,000 homes are believed to have been destroyed.
With a seating capacity of 16,000, Lakewood Church became a home arena for the Houston Rockets from 1975 to 2003. And there were safety issues that people don't understand. "We love helping people and that's what our message is all about".
When asked about the reaction on social media, Osteen says he invokes a higher power. 'Hey, my reputation is in God's hands and He can take care of that'.
"[The city] didn't need us as shelter then", Osteen said.