Caldwell, described as a spiritual adviser to President George W. Bush, is the senior pastor of Windsor Village United Methodist Church.
He became a prominent figure not just in the Bayou City but across the country after he launched his church in 1982.
Caldwell's preaching style and charismatic way of attracting followers led to exponential growth at the church, expanding from 25 members at the first service to more than 16,000 members today.
As a spiritual advisor to former President George W. Bush, Caldwell even presided over Jenna Bush Hager's wedding at the Bush family's Crawford, Texas, ranch.
WATCH: Who is Kirbyjon Caldwell?
WATCH: What church members told ABC13 after the indictment
His non-profit organizations have built affordable housing, provided health care, and even launched a shelter for abused children.
Inside the church on Thursday, staff members told us we'll have to wait to hear from leadership. They're busy getting ready for Easter weekend.
Caldwell is listed as a limited partner with the Houston Texans, which released a statement Thursday evening saying: "We have recently been made aware of a report involving Kirbyjon Caldwell. We are gathering more information and will have no further comment at this time."
PHOTO: Caldwell weds Jenna Bush and Henry Hager in Crawford
Many others expressed their shock on social media. Lue Adriana Adams wrote, "Wow. Corruption of that degree on the house of God?"
Meanwhile, others like Nikol Jasper wrote, "We should NOT judge."
But, it will be up to a court to judge what punishment Caldwell should face.
If found guilty, he could face decades in prison and millions of dollars in fines.
Houston megachurch pastor Kirbyjon Caldwell indicted for wire fraud and money laundering
Sources close to the investigation tell me Pastor Kirbyjon Caldwell, who officiated Jenna Bush’s wedding, is making arrangements to turn himself in next week to 10 days. #abc13 https://t.co/5GMtMAftMs— Miya Shay (@ABC13Miya) March 29, 2018