Definition of Ecclesiastical Matter
One that concerns doctrine, creed, or form of worship of the church, or the adoption and enforcement within a religious association of needful laws and regulations for the government of the membership, and the power of excluding from such associations those deemed unworthy of membership. Olear v. Haniak, 235 Mo.App. 249, 131 S.W.2d 375, 380.
That's the definition of Ecclesiastical Matter in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.