1689 Baptist Confession 25.3

Chapter 25 — Of Marriage

Section 3. It is lawful for all sorts of people to marry who are able with judgment to give their consent; yet it is the duty of Christians to marry in the Lord; and therefore such as profess the true religion, should not marry with infidels, or idolaters; neither should such as are godly be unequally yoked, by marrying with such as are wicked in their life, or who maintain damnable heresy.