On Sunday, Nov. 13, Christians around the world will join together to ask God to help those imprisoned, tortured, and even killed for their faith.
The day is known as the International Day of Prayer for the Persecuted Church.
Event organizers are also encouraging prayer for the souls of the oppressors, the nations that promote persecution, and those who ignore it.
The IDOP began in 1996 through the efforts of the World Evangelical Fellowship in cooperation with a variety of denominations and faith-based organizations.
From a core group of approximately 7,000 churches, the IDOP has grown to be the largest prayer day event of its kind in the world.
Since its inception, more than 100,000 churches, representing every U.S. denomination, have taken part in the IDOP, according to the group's website.