§1. Pastors of souls, especially bishops and pastors, are to be concerned that the word of God is also proclaimed to those of the faithful who because of the condition of their life do not have suYcient common and ordinary pastoral care or lack it completely.
§2. They are also to make provision that the message of the gospel reaches non-believers living in the territory since the care of souls must also extend to them no less than to the faithful.
Source: Code of Canon Law (Vatican.va)