1 Timothy 1:19

But what storm at sea was ever so fierce and wild as this tempest of the Churches? In it every landmark of the Fathers has been moved; every foundation, every bulwark of opinion has been shaken; everything buoyed up on the unsound is dashed about and shaken down. We attack one another. We are overthrown by one another. If our enemy is not the first to strike us, we are wounded by the comrade at our side. If a foeman is stricken and falls, his fellow soldier tramples him down. There is at least this bond of union between us that we hate our common foes, but no sooner have the enemy gone by than we find enemies in one another. And who could make a complete list of all the wrecks? Some have gone to the bottom on the attack of the enemy, some through the unsuspected treachery of their allies, some from the blundering of their own officers. We see, as it were, whole churches, crews and all, dashed and shattered upon the sunken reefs of disingenuous heresy, while others of the enemies of the Spirit of Salvation have seized the helm and made shipwreck of the faith.

Innumerable are the examples we must omit, since we wish to be brief. But all of them make it sufficiently clear that the customary method of most heresies consists in rejoicing in "profane novelties," in loathing traditional knowledge, which some rejecting have made shipwreck concerning …

Everywhere, beloved, we have need of faith, faith the mother of blessings, the medicine of salvation; and without this it is impossible to possess any one of the great doctrines. Without this, men are like to those who attempt to cross the open sea without a ship, who for a little way hold out by swimming, using both hands and feet, but when they have advanced farther, are quickly swamped by the waves: in like manner they who use their own reasonings, before they have learnt anything, suffer shipwreck; as also Paul saith, "Who concerning faith have made shipwreck." (1 Tim. i. 19.) That this be not our case, let us hold fast the sacred anchor by which Christ bringeth over the Samaritan woman now.

"Holding faith, and a good conscience." For he that would be a Teacher must first teach himself. For as he who has not first been a good soldier, will never be a general, so it is with the Teacher; wherefore he says elsewhere, "Lest when I have preached to others, I myself should be a cast-away." "Holding faith," he says, "and a good conscience," that so thou mayest preside over others. When we hear this, let us not disdain the exhortations of our superiors, though we be Teachers. For if Timothy, to whom all of us together are not worthy to be compared, receives commands and is instructed, and that being himself in the Teacher's office, much more should we. "Which some having put away, have made shipwreck concerning the faith." And this follows naturally. For when the life is corrupt, it engenders a doctrine congenial to it, and from this circumstance many are seen to fall into a gulf of evil, and to turn aside into Heathenism. For that they may not be tormented with the fear of futurity, they endeavor to persuade their souls, that what we preach is false. And some turn aside from the faith, who seek out everything by reasoning; for reasoning produces shipwreck, while faith is as a safe ship.

Do not think, he says, to be content only with the fact that you have been appointed to the priesthood according to the prophecies, but you must have faith, so as to rightly proclaim the word of truth, and a good conscience, or a blameless …

Here is mentioned: first, the way to wage the war; second, the necessity of a good conscience, at which some rejecting. He says, therefore: that you war in them a good warfare. As if to say: you can wage a good war: first of all, …

Which - Namely, a good conscience. Some having thrust away - It goes away unwillingly it always says, "Do not hurt me." And they who retain this do not make shipwreck of their faith. Indeed, none can make shipwreck of faith who never had it.

Let us live up to the directions of a renewed enlightened conscience, and keep conscience void of offence ( Acts xxiv. 16 ), a conscience not debauched by any vice or sin, and this will be a means of preserving us sound in the faith; we must look to the one as well a the other, for the mystery of the faith must be held in a pure conscience, ch. iii.

Holding faith, and a good conscience.....

The loss of good conscience entails the shipwreck of faith. Consciousness of sin (unrepented of and forgiven) kills the germ of faith in man [WIESINGER]. which--Greek singular, namely, "good conscience," not "faith" also; however, the result of putting away good conscience is, one loses faith also. put away--a wilful act.

Holding faith - All the truths of the Christian religion, firmly believing them, and fervently proclaiming them to others. And a good conscience - So holding the truth as to live according to its dictates, that a good conscience may be ever preserved. As the apostle had just spoken of the Christian’s warfare, so he here refers to the Christian armor, especially to the shield and breastplate; the shield of faith, and the breastplate of righteousness. See on Eph 6:13, etc., (note), and 1Th 5:8 (note). Which some having put away - Απωσαμενοι· Having thrust away; as a fool-hardy soldier might his shield and his breastplate, or a mad sailor his pilot, helm, and compass. Concerning faith - The great truths of the Christian religion. Have made shipwreck - Being without the faith, that only infallible system of truth; and a good conscience, that skillful pilot, that steady and commanding helm, that faithful and invariable loadstone; have been driven to and fro by every wind of doctrine, and, getting among shoals, quicksands, and rocks, have been shipwrecked and ingulfed.