The "Rededicate 250" rally is kicking off on Sunday in Washington on the National Mall.

Organizers describe the event as a "historic gathering" with Americans of "every background across the country" preparing for the "nation’s 250th birthday with Scripture, testimony, prayer, and rededication of our country as One Nation to God."

Speakers include Secretary of State Marco Rubio and President Trump, who will appear with a video address.