Priests are instructed that marriage is part of God's natural law and to support the couple if they do choose to marry. Today it is common for Roman Catholics to enter into a "mixed marriage" between a Catholic and a baptized non-Catholic. Couples entering into a mixed marriage are usually allowed to marry in a Catholic church provided their decision is of their own accord and they intend to remain together for life, to be faithful to each other, and to have children which are brought up in the Catholic faith.