Various kinds of “unity” – “The first kind of unity is unity in religion.”

Thou hast asked about unity. The first kind of unity is unity in religion. This unity has always been the cause of the victory of the Faith of God in every age and century. Togetherness is the mystic sword of God. 

For example, should a government see that most of the people of the country have rent asunder the veils and are turning towards the horizon of Divine revelation, it should remain silent and should listen to what is said. Each person who is attentive attains to the knowledge of God, except those who are utterly distant from the Mercy of God. They indeed are fully deserving of anger and vehement opposition. Such persons are, in any case, forbidden and barred. 

- Baha’u’llah  (‘The Tablet of Unity’, a provisional translation)