Holding faith, and a good conscience; which some having put away concerning faith have made it shipwreck:
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Ambrose of Milan
AD 397
The truth of the Lord encompasses him, so that he is not afraid of the terror of the night or of the thing that walks about in darkness. Therefore, “Zabulon shall dwell by the sea.” Thus he may look upon the shipwrecks of others while himself free from danger. He may behold others driven here and there on the sea of this world, those who are borne about by every wind of doctrine, while himself persevering on the ground of an immovable faith.
But the sectarians, who have fallen away from the teaching of the church and made shipwreck concerning the faith, wrongly think that evil has some sort of eternal existence. They arbitrarily imagine another god besides the true One, the Father of our Lord Jesus Christ. They fantasize that he is the unmade producer of evil and the head of wickedness, who is also artificer of creation. These men one can easily refute, not only from the divine Scriptures but also from the human understanding itself, the very source of these insane imaginations.
What storm at sea was ever so fierce and wild as this tempest within 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 an enemy soldier 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 has 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 deceitful teaching, while others of the enemies ...
In all circumstances, beloved, we need faith—faith, the mother of virtues, the medicine of salvation—without it we cannot grasp any teaching on sublime matters. But those who are without faith are like people trying to cross the sea without a ship. They are able to swim for a while by using hands and feet, but when they have gone farther out they are soon swamped by the waves. So, also, those who have recourse to their own reasoning before accepting any knowledge are inviting shipwreck, even as Paul speaks of those “who have made shipwreck of the faith.”
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. 1 Corinthians 9:27 Holding faith, he says, and a good conscience, that so you may 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 the...
Wherewith, indeed, some having been ensnared, "have suffered shipwreck about faith.".
, men already sunken from the faith into blasphemy; whence, too, he pronounced them "shipwrecked with regard to 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 the faith. Conversely, it is proper for Catholics to guard the “deposit,” handed down by the holy fathers, to condemn profane novelties, and, as the apostle said, “before and now I say again,” let him be anathema “if any one preach to you a gospel besides that which you have received.”