But if they cannot contain - If they have not the gift of continence; if they cannot be secure against temptation; if they have not strength of virtue enough to preserve them from the danger of sin, and of bringing reproach and scandal on the church.
It is better - It is to be preferred.
Than to burn - The passion here referred to is often compared to a fire; see Virgil, Aeneas 4:68. It is better to marry, even with all the inconveniences attending the marriage life in a time of distress and persecution in the church 1 Corinthians 7:26, than to be the prey of raging, consuming, and exciting passions.