In omnem terram, exivit sonus eorum, et in fines orbis terra verba eorum.
Their sound hath gone forth into all the earth, and their words unto the ends of the whole world.
Romans 10.18
Misit illos binos ante faciem suam.
He sent them two and two before his face.
Luke 10.1
Separation, Dispersion, Division
Modern Hagiography
Lives of the Saints by Sabine Baring-Gould.
Biblical Texts
Ancient and Medieval Hagiography
Eusebius, Ecclesiastical History
Art & Architecture
Warburg Institute Iconographic Database, also
Music
Nihil sub sole novum 