to do something with missionary zeal

A 17th-century controversy between the followers of Jacob Arminius and Francis Gomar over predestination was settled by the Synod of Dort (1618—1619), which condemned the antipredestinarian teachings of Arminius in its Canons of Dort.

For its French readers, Paris' Le Jazz Hot review was trying to explain the artistry of U.S. bebopper Charlie (Yard-bird) Parker.

ischiopagus, xiphopagus, craniopagus