1 Corinthians 7:9 - Matthew Poole's English Annotations on the Holy Bible

That St. Paul's saying: It is good, & c. did not signify, it is the will of God, or, (as the papists would have it), it is my counsel in order to your further perfection, is plain by his precept for them to marry if they could not contain; and this likewise lets us see that second marriages are not only lawful, but may be an incumbent duty, that is, if they who are concerned as to them cannot contain themselves within the bounds and rule of chastity, which must not only be interpreted with reference to acts of uncleanness. This is contradicted by the reason given by the apostle, determining that marriage was much more eligible than burning, which term signifies the inward fervour and eager inclinations of the mind, not the acts only of the outward man.