Apostles of the risen Christ, go forth. H. Bonar. [Missions.] Printed in the second series of his Hymns of Faith & Hope, 1863, pp. 142-3, where it is headed "The Great Message," and the motto is prefixed:—
"Quo vos magistri gloria, quo salus
Invitat orbis, sancta cohors
Dei Portate verbum." Old Hymn.
It is in 5 stanzas of 6 lines. Its use is mainly confined to America. [William T. Brooke]
-- John Julian, Dictionary of Hymnology (1907)