In the Roman Catholic Church, Halloween's Christian connection is cited, and Halloween celebrations are common in Catholic parochial schools throughout North America and in Ireland. Many fundamentalist and evangelical churches use "Hell houses", themed pamphlets, or comic-style tracts such as those created by Jack T. Chick in order to make use of Halloween's popularity as an opportunity for evangelism. Some consider Halloween to be completely incompatible with the Christian faith due to its putative origins in the Festival of the Dead celebration.Indeed, even though Eastern Orthodox Christians observe All Hallows' Day on the First Sunday after Pentecost, the Eastern Orthodox Church recommends the observance of Vespers and/or a Paraklesis on the Western observance of All Hallows' Eve, out of the pastoral need to provide an alternative to popular celebrations