1 Peter 1:25

25But the word of God The Prophet does not shew what the word of God is in itself, but what we ought to think of it; for since man is vanity in himself, it remains that he ought to seek life elsewhere. Hence Peter ascribes power and efficacy to God’s word, according to the authority of the Prophet, so that it can confer on us what is real, solid, and eternal. For this was what the Prophet had in view, that there is no permanent life but in God, and that this is communicated to us by the word. However fading, then, is the nature of man, yet he is made eternal by the word; for he is re-moulded and becomes a new creature.

This is the word which by the gospel is preached unto you, or, which has been declared to you. He first reminds us, that when the word of God is mentioned, we are very foolish if we imagine it to be remote from us in the air or in heaven; for we ought to know that it has been revealed to us by the Lord. What, then, is this word of the Lord, which gives us life? Even the Law, the Prophets, the Gospel. Those who wander beyond these limits of revelation, find nothing but the impostures of Satan and his dotages, and not the word of the Lord. We ought the more carefully to notice this, because impious and Luciferian men, craftily allowing to God’s word its own honor, at the same time attempt to draw us away from the Scriptures, as that unprincipled man, Agrippa, who highly extols the eternity of God’s word, and yet treats with scurrility the Prophets, and thus indirectly laughs to scorn the Word of God.

In short, as I have already reminded you, no mention is here made of the word which lies hid in the bosom of God, but of that which has proceeded from his mouth, and has come to us. So again it ought to be borne in mind, that God designed by the Apostles and Prophets to speak to us, and their mouths is the mouth of the only true God.

Then, when Peter says, Which has been announced, or declared, to you, he intimates that the word is not to be sought elsewhere than in the Gospel preached to us; and truly we know not the way of eternal life otherwise than by faith. But there can be no faith, except we know that the word is destined for us.

To the same purpose is what Moses said to the people,

“Say not in thine heart, Who shall ascend into heaven, etc.; nigh is the word, in thy mouth and in thy heart.”
(Deuteronomy 30:12.)

That these words agree with what Peter says, Paul shews Romans 10:6, where he teaches us that it was the word of faith which he preached.

There is here, besides, no common eulogy on preaching; for Peter declares that what is preached is the life-giving word. God alone is indeed he who regenerates us; but for that purpose he employs the ministry of men; and on this account Paul glories that the Corinthians had been spiritually begotten by him. (1 Corinthians 4:15.) It is indeed certain that those who plant and those who water, are nothing; but whenever God is pleased to bless their labor, he makes their doctrine efficacious by the power of his Spirit; and the voice which is in itself mortal, is made an instrument to communicate eternal life.