Recently, thousands gathered in Jerusalem's largest auditorium to pray before Sunday's main event. They came from many different nations but shared a common goal.
"To pray for the peace of Jerusalem is to pray for the peace of the world," another speaker said.
The event's co-founder, Robert Stearns, said the world is often confused about Jerusalem. But those who believe the Bible are not.
"You're here because you're very clear about Jerusalem," he told the crowd. "You're here because Jerusalem and Israel are covenanted to the people of God, the Jewish people now and forever since King David established Jerusalem as the capital of Israel 3,000 years ago."
Because of the Jewish holiday of the Feast of Tabernacles, organizers held the meeting earlier this year.
But the event will be broadcast globally on Sunday, with millions of Christians and tens of thousands of churches joining in to pray for the peace of Jerusalem.