Hit up Christian founded/based companies

• Chik-Fil-a, Barbasol,
• Tyson Foods,
• Marriott Hotel,
• Curves,
• Carl's Jr,
• Alaska Airlines,
• JetBlue,
• Trump Organization,
• In-N-Out Burger,
• Hobby Lobby,
• Forever 21,
• George Foreman Cooking (found an article where it claims he is a minister too https://spokanefavs.com/11-christian-businesses-and-companies-that-have-great-values/ ),
• eHarmony,
• Wendy's,
• Mary Kay,
• Timberland,
• Interstate Batteries,
• Trijicon,
• ServiceMaster (found them here with multiple daughter companies https://www.businessinsider.com/17-big-companies-that-are-intensely-religious-2012-1?amp ),
• H.E.B. Grocer,
• Tom's of Maine,

Found other possible companies here http://www.christianity9to5.org/christian-owned-companies/

Also 47 listed here https://www.starterstory.com/ideas/christian-faith-based-products-business/businesses

Sorry, there are likely repeats. Need to get my children to bed & hope that this helps get you some ideas on companies to request sponsorship from.

Most of these companies would likely be willing to offer up 1k-50k in cash/in kind donations for this event. Once events have a good track record (5+ years of success) with a growing guest list, it isn't hard to get a few hundred thousand from large groups to be major sponsors of the events.

Also do you have vendors lined up (if you want them)? Could be that catering companies, or other Christian focused groups may want to rent a space there for advertising purposes.

Maybe you want to set this up as a 501c3 & donate anything above operational costs to a few good charities/churches (like Camp Yesu).

Just tossing some ideas out there.