Ole Anthony's been investigation religion since the mid 1980's.
Jesse Duplantis is building a mansion in St. Charles Parish. It's reportedly one of the largest on the East Bank of the River. Construction began in October of 2008.
Anthony said, "There's more fraud committed in America in the name of God than any other fraud. And that's is just not right."
Anthony heads the Trinity Foundation. It's a Dallas based not for profit.
"Many of these ministries we investigate at the top are spiritual snakepits," Anthony said. "And that's sad."
Trinity Foundation has worked with the FBI, IRS, even the U.S. Senate.
"Believe it or not, we are the only group in America that routinely investigates religious fraud," Anthony said. "Why? Because these guys are terribly litigious. I've been sued so many times I can't count it anymore."
One of the televangelists Anthony is investigating is based in St. Charles Parish.
Jesse Duplantis is charismatic. He also has a worldwide following.
But Anthony says greed motivates Duplantis. And Anthony says that is apparent by his luxurious lifestyle.
Duplantis is building a mansion in St. Charles Parish. It's reportedly one of the largest on the East Bank of the River. Construction began in October of 2008. The house has 35-thousand square feet of covered space. It has 22,039 of living space. The garage and other covered area totals 12,947 square feet.
Inside, there will be 5 bedrooms, more than 7 bathrooms, and a home theatre. Parish records show the cost at 3 million dollars. The owner of the house is not Duplantis, but his ministry, Jesse Duplantis Ministries.
Pete Evans leads the investigations for the Trinity Foundation.
Evans said, "Donors expect the money they donate to the church to go to the poor and needy. Not to build mansions for the pastor."
Evans says Duplantis teaches the Prosperity Gospel.
"If you give x amount of dollars, you are going to get that multipled and get that back to you," Evans said. "It's a heavenly Las Vegas in some sense."
According to Duplantis, the gospel has worked for him.
In a television interview Duplantis said he was, "driving down highway 167 going towards Lafayette. And a citation jet flew over my head. And the Lord said look up. And he said I am going to give you one like that."
Duplantis says the lord told him he would get his own private plane.
"I'm figuring how am I going to pay for this. How am I going to sustain this," Duplantis said in that interview. "Lord said Jesse - I didn't ask you to pay for it. I asked you to believe for it."
And years later, Duplantis got that plane.
And since then, he's been a frequent flyer.
Duplantis blocks his flight records, but Fox 8 News managed to get a copy. Since 2000, .Duplantis has used his plane nearly 2500 times. A plane owned by his ministry.
"It appears as though on the surface that Duplantis is using his jet to go on vacation from time to time," said Evans.
In 2009, Jesse Duplantis Ministries plane took a 17 day trip to Hawaii. The plane hopped from island to island. We spoke to one airplane operator who has the same jet as Duplantis. By his calculations, this Hawaii trip cost his ministry $40,000. That includes the cost of gassing up, flying, and storing the plane in Hawaii for 17 days.
Records show, in early March, he took an 11 day Hawaii trip this year too.