Holding the mystery of faith As if he had said, "Holding the pure doctrine of religion, and that from the heart, with a sincere fear of God;" or, "Being well instructed in the faith, so as not to be ignorant of anything which it is necessary for Christians to know." He gives to the sum of Christian doctrine the honorable appellation of a mystery; as indeed God, through the gospel, reveals to men on earth a wisdom which angels in heaven behold with admiration, and, therefore, we need not wonder if it exceed human capacity. Let us therefore remember that it ought to be embraced with the deepest reverence; and because we could never, by our own strength, ascend to such a height, let us humbly entreat God to impart it to us by the Spirit of revelation. On the other hand, when we see wicked men either ridicule those doctrines or have no relish for them, let us acknowledge that it is owing to the grace of God that those things which have been hidden from others are in our hearts, and before our eyes, as Moses says, (Deuteronomy 30:11.) Thus he wishes that deacons should be well instructed in "the mystery of faith;" because, although they do not hold the office of teaching, yet it would be exceedingly absurd to hold a public office in the Church, while they were ill informed in the Christian faith, more especially since they must frequently be laid under the necessity of administering advice and consolation, if they do not choose to neglect their duties. It is added, in a pure conscience, which extends to the whole life, but chiefly that they may know how to obey God.

Holding the mystery of the faith - On the word "mystery," see notes on 1-Corinthians 2:7. It means that which had been concealed, or hidden, but which was now revealed. The word "faith" here, is synonymous with "the gospel;" and the sense is, that he should hold firmly the great doctrines of the Christian religion which had been so long concealed from people, but which were now revealed. The reason is obvious. Though not a preacher, yet his influence and example would be great, and a man who held material error ought not to be in office.
In a pure conscience - A mere orthodox faith was not all that was necessary, for it was possible that a man might be professedly firm in the belief of the truths of revelation, and yet be corrupt at heart.

Holding the mystery of the faith - Instead of της πιστεως, the faith, one MS. (the readings of which are found in the margin of a copy of Mill's Greek text in the Bodleian library, and which is marked 61 in Griesbach) reads αναστασεως, of the resurrection. This reading, like many others in this MS., is found nowhere else; and is worthy of little regard, but as expressing what appeared to the writer to be the apostle's meaning. One of the greatest mysteries of the faith was undoubtedly the resurrection of the dead; and this was held in a pure conscience when the person so exercised himself as to have a conscience void of offense towards God and towards men. See Acts 24:16. What has been since called Antinomianism, that is, making void the moral law, by a pretended faith in the righteousness of Christ, is that which the apostle has here particularly in view.

Holding the (f) mystery of the faith in a pure conscience.
(f) The doctrine of the Gospel, which is indeed a mystery: for flesh and blood do not reveal it.

Holding the mystery of the faith,.... The doctrine of the Gospel, called the "faith", because it contains things to be believed; proposes Christ the object of faith; is the means by which faith comes, and is unprofitable without it: it is called "the mystery", because it is of divine revelation, and could have never been discovered by human reason; and now it is revealed, the modus of many things contained in it remains a mystery; several of the doctrines of it are mysterious ones, particularly the doctrine of the Trinity; and which the ancient Jews call by this very name, (a) , "the mystery of faith"; the incarnation of the Son of God, the union of the saints to Christ, and their communion with him, and the resurrection of the dead, with others. Now this mysterious doctrine of faith is to be held by deacons; they are to profess it, and to hold fast the profession of it and that
in a pure conscience; with a conscience sprinkled by the blood of Christ; with a conscience void of offence both towards God and man; with a suitable life and conversation; a conversation becoming the Gospel of Christ, and by which it is adorned: and this part of their character is necessary, that such may be able to instruct and establish those who are weak in the faith, and oppose and refute the erroneous, and also recommend the Gospel by their own example; otherwise should their principles or practices be bad, their influence on others might be very pernicious and fatal.
(a) Zohar in Genesis. fol. 12. 4. & 13. 1, 2. & in Exod. fol. 66. 3.

the mystery of the faith--holding the faith, which to the natural man remains a mystery, but which has been revealed by the Spirit to them (Romans 16:25; 1-Corinthians 2:7-10), in a pure conscience (1-Timothy 1:5, 1-Timothy 1:19). ("Pure," that is, in which nothing base or foreign is intermixed [TITTMANN]). Though deacons were not ordinarily called on to preach (Stephen and Philip are not exceptions to this, since it was as evangelists, rather than as deacons, they preached), yet as being office-bearers in the Church, and having much intercourse with all the members, they especially needed to have this characteristic, which every Christian ought to have.

Holding fast the faith in a pure conscience - Steadfast in faith, holy in heart and life.