20. Why is the church of Christ called catholic, or universal?

Because it is not confined to one nation, as it was under the Jewish economy, but consists of all those in every part of the world who believe in Christ; because its privileges are conferred equally upon all classes of men; and because it will yet embrace within it all nations and kindreds of the earth.

Thomas Smyth, An Ecclesiastical Catechism of the Presbyterian Church; For the Use of Families, Bible-Classes, and Private Members, 14.