1 Corinthians 7:5

This vice, it is true, was corrected in some measure by the ancient canons; for they prohibited a husband from leaving his wife against her will, on pretense of continency; and in like manner a wife from refusing to her husband the use of her body. In this, however, they erred — that they permitted both together to live in perpetual celibacy, as if it were lawful for men to decree anything that is contrary to the Spirit of God. Paul expressly commands, that married persons do not defraud each other, except for a time The bishops give permission to leave off the use of marriage for ever. Who does not see the manifest contrariety? Let no one, therefore, be surprised, that we make free to dissent on this point from the ancients, who, it is evident, deviated from the clear statements of the word of God.

That ye may have leisure for fasting and prayer. We must take notice, that Paul does not speak here of every kind of fasting, or every kind of prayer. That sobriety and temperance, which ought to be habitual on the part of Christians, is a kind of fasting. Prayer, too, ought to be not merely daily, but even continual. He speaks, however, of that kind of fasting which is a solemn expression of penitence, with the view of deprecating God’s anger, or by which believers prepare themselves for prayer, when they are undertaking some important business. In like manner, the kind of prayer that he speaks of is such as requires a more intense affection of the mind. For it sometimes happens, that. we require (leaving off everything else) to fast and pray; as when any calamity is impending, if it appears to be a visitation of God’s wrath; or when we are involved in any difficult matter, or when we have something of great importance to do, as, for example, the ordaining of pastors. Now it is with propriety that the Apostle connects these two things, because fasting is a preparation for prayer, as Christ also connects them, when he says,

This kind of devils goeth not out but by fasting and prayer. (Matthew 17:21.)

When, therefore, Paul says, that ye may be at leisure, the meaning is, that having freed ourselves from all impediments, we may apply ourselves to this one thing. Now if any one objects, that the use of the marriage bed is an evil thing, inasmuch as it hinders prayer, the answer is easy — that it is not on that account worse than meat and drink, by which fasting is hindered. But it is the part of believers to consider wisely when it is time to eat and drink, and when to fast. It is also the part of the same wisdom to have intercourse with their wives when it is seasonable, and to refrain from that intercourse when they are called to be engaged otherwise.

And come together again, that Satan tempt you not Here he brings forward the reason, from ignorance of which the ancients have fallen into error, in rashly and inconsiderately approving of a vow of perpetual continency. For they reasoned in this manner: “If it is good for married persons sometimes to impose upon themselves for a time a voluntary continency with mutual consent, then, if they impose this upon themselves for ever, it will be so much the better.” But then, they did not consider how much danger was involved in this, for we give Satan an occasion for oppressing us, when we attempt anything beyond the measure of our weakness. “But we must resist Satan.” What if arms and shield be wanting? “They must be sought from the Lord,” say they. But in vain shall we beseech the Lord to assist us in a rash attempt. We must, therefore, carefully observe the clause — for your incontinency: for we are exposed to Satan’s temptations in consequence of the infirmity of our flesh. If we wish to shut them out, and keep them back, it becomes us to oppose them by the remedy, with which the Lord has furnished us. Those, therefore, act a rash part, who give up the use of the marriage bed. It is as if they had made an agreement with God as to perpetual strength.