Great Christians of France: Saint Louis and Calvin

'Go ye and preach to all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost.'
This was the last injunction of Jesus Christ to His Apostles.
Universality is therefore the first principle and ultimate aim of Christianity. It has been designed for and is intended to become, in fundamental belief, the religion of the universe.
The Universality of Christianity in fundamental belief is accompanied by Diversity in institutions and forms of worship, which are secondary and external developments; for this Diversity is the inevitable result of difference of place, of time, of degrees of civilization, and of all those events which mould the destiny and constitute the history of nations.
When the Apostles were commanded to instruct all nations 'in the name of the Father, and of the Son, and of the Holy Ghost,' they also received the gift of tongues. This gift, which was a consequence of the Diversity of their means and methods of instruction, also bore witness to it, and at the same time manifested the Unity and Universality of their mission.