I don't base my beliefs on opinion or commentary.
Barclay's
This is a text which has much troubled those who are advocates of total abstinence. It must be remembered that it does not give any man a licence to indulge in drink to excess; it simply approves the use of wine where it may be medicinally helpful. If it does lay down any principle at all, E. F. Brown has well stated it: "It shows that while total abstinence may be recommended as a wise counsel, it is never to be enforced as a religious obligation." Paul is simply saying that there is no virtue in an asceticism which does the body more harm than good.
Albert Barnes
Thus considered, this direction is as worthy to be given by an inspired teacher as it is to counsel a man to pay a proper regard to his health, and not needlessly to throw away his life; compare Mat_10:23. The phrase, “drink no longer water,” is equivalent to, “drink not water only;” see numerous instances in Wetstein. The Greek word here used does not elsewhere occur in the New Testament.
But use a little wine - Mingled with the water - the common method of drinking wine in the East; see Robinson’s Bibliotheca Sacra, 1:512, 513.
Expositor's Bible Commentary
It remains to ascertain the meaning of the curious parenthesis "Be no longer a drinker of water," and its connection with the rest of the passage.
It was probably suggested to St. Paul by the preceding words, "Beware of making yourself responsible for the sins of others. Keep your own life above suspicion." This charge reminds the Apostle that his beloved disciple has been using ill-advised means to do this very thing. Either in order to mark his abhorrence of the drunkenness which was one of the most conspicuous vices of the age, or in order to bring his own body more easily into subjection, Timothy had abandoned the use of wine altogether, in spite of his weak health. St. Paul, therefore, with characteristic affection, takes care that his charge is not misunderstood. In urging his representative to be strictly careful of his own conduct, he does not wish to be understood as encouraging him to give up whatever might be abused or made the basis of a slander, nor yet as approving his rigor in giving up the use of wine. On the contrary, he thinks it a mistake; and he takes this opportunity of telling him so, while it is in his mind. Christ’s ministers have important duties to perform, and have no right to play tricks with their health. We may here repeat, with renewed confidence, that a touch of this kind would never have occurred to a forger. Hence, in order to account for such natural touches as these, those who maintain that these Epistles are a fabrication now resort to the hypothesis that the forger had some genuine letters of St. Paul and worked parts of them into his own productions. It seems to be far more reasonable to believe that St. Paul wrote the whole of them.
John Gill
Drink no longer water,.... Though it was commendable in him to keep under his body, as the apostle did, by abstemious living, and not pamper the flesh and encourage the lusts of it, and so preserve purity and chastity; yet it was proper that he should take care of his health, that it was not impaired by too much severity, and so he be incapable of doing the work of the Lord. And it seems by this, that his long and only use of water for his drink had been prejudicial to his health: wherefore the following advice was judged proper:
but use a little wine; some, by "a little wine", understand not the quantity, but the quality of the wine; a thin, small, weak wine, or wine mixed with water; and so the Ethiopic version renders the words, "drink no more simple water", (or water only,) "but mix a little wine"; though rather the quantity is intended, and which is mentioned. Not as though there was any danger of Timothy's running into an excess of drinking; but for the sake of others, lest they should abuse such a direction, to indulge themselves in an excessive way; and chiefly to prevent the scoffs of profane persons; who otherwise would have insinuated that the apostle indulged intemperance and excess: whereas this advice to the use of wine, was not for pleasure, and for the satisfying of the flesh, but for health,
Matthew Henry
2. He charges him to take care of his health: Drink no longer water, etc. It seems Timothy was a mortified man to the pleasures of sense; he drank water, and he was a man of no strong constitution of body, and for this reason Paul advises him to use wine for the helping of his stomach and the recruiting of his nature. Observe, It is a little wine, for ministers must not be given to much wine; so much as may be for the health of the body, not so as to distemper it, for God has made wine to rejoice man's heart.
Now take your pick.
Barclay's
This is a text which has much troubled those who are advocates of total abstinence. It must be remembered that it does not give any man a licence to indulge in drink to excess; it simply approves the use of wine where it may be medicinally helpful. If it does lay down any principle at all, E. F. Brown has well stated it: "It shows that while total abstinence may be recommended as a wise counsel, it is never to be enforced as a religious obligation." Paul is simply saying that there is no virtue in an asceticism which does the body more harm than good.
Albert Barnes
Thus considered, this direction is as worthy to be given by an inspired teacher as it is to counsel a man to pay a proper regard to his health, and not needlessly to throw away his life; compare Mat_10:23. The phrase, “drink no longer water,” is equivalent to, “drink not water only;” see numerous instances in Wetstein. The Greek word here used does not elsewhere occur in the New Testament.
But use a little wine - Mingled with the water - the common method of drinking wine in the East; see Robinson’s Bibliotheca Sacra, 1:512, 513.
Expositor's Bible Commentary
It remains to ascertain the meaning of the curious parenthesis "Be no longer a drinker of water," and its connection with the rest of the passage.
It was probably suggested to St. Paul by the preceding words, "Beware of making yourself responsible for the sins of others. Keep your own life above suspicion." This charge reminds the Apostle that his beloved disciple has been using ill-advised means to do this very thing. Either in order to mark his abhorrence of the drunkenness which was one of the most conspicuous vices of the age, or in order to bring his own body more easily into subjection, Timothy had abandoned the use of wine altogether, in spite of his weak health. St. Paul, therefore, with characteristic affection, takes care that his charge is not misunderstood. In urging his representative to be strictly careful of his own conduct, he does not wish to be understood as encouraging him to give up whatever might be abused or made the basis of a slander, nor yet as approving his rigor in giving up the use of wine. On the contrary, he thinks it a mistake; and he takes this opportunity of telling him so, while it is in his mind. Christ’s ministers have important duties to perform, and have no right to play tricks with their health. We may here repeat, with renewed confidence, that a touch of this kind would never have occurred to a forger. Hence, in order to account for such natural touches as these, those who maintain that these Epistles are a fabrication now resort to the hypothesis that the forger had some genuine letters of St. Paul and worked parts of them into his own productions. It seems to be far more reasonable to believe that St. Paul wrote the whole of them.
John Gill
Drink no longer water,.... Though it was commendable in him to keep under his body, as the apostle did, by abstemious living, and not pamper the flesh and encourage the lusts of it, and so preserve purity and chastity; yet it was proper that he should take care of his health, that it was not impaired by too much severity, and so he be incapable of doing the work of the Lord. And it seems by this, that his long and only use of water for his drink had been prejudicial to his health: wherefore the following advice was judged proper:
but use a little wine; some, by "a little wine", understand not the quantity, but the quality of the wine; a thin, small, weak wine, or wine mixed with water; and so the Ethiopic version renders the words, "drink no more simple water", (or water only,) "but mix a little wine"; though rather the quantity is intended, and which is mentioned. Not as though there was any danger of Timothy's running into an excess of drinking; but for the sake of others, lest they should abuse such a direction, to indulge themselves in an excessive way; and chiefly to prevent the scoffs of profane persons; who otherwise would have insinuated that the apostle indulged intemperance and excess: whereas this advice to the use of wine, was not for pleasure, and for the satisfying of the flesh, but for health,
Matthew Henry
2. He charges him to take care of his health: Drink no longer water, etc. It seems Timothy was a mortified man to the pleasures of sense; he drank water, and he was a man of no strong constitution of body, and for this reason Paul advises him to use wine for the helping of his stomach and the recruiting of his nature. Observe, It is a little wine, for ministers must not be given to much wine; so much as may be for the health of the body, not so as to distemper it, for God has made wine to rejoice man's heart.
Now take your pick.