Jeremiah 1:7

"And I said: O You who are, Master, Lord, behold, I do not know how to speak, for I am young. And the Lord said to me: Do not say that I am young, for to all to whom I shall send you, you shall go." We have often said that it is possible to be a child according to the inner man, even though one be in the aged stage of the body; and it is possible sometimes to be a child according to the outer man, but according to the inner a man. Such was Jeremiah, already having the grace from God while still being in the childhood stage as regards the body. Therefore the Lord says to him: "Do not say that I am young." And a sign that he is not young, but "a perfect man," is the "to all to whom I shall send you, you shall go, and according to all that I command you, you shall speak. Do not be afraid before their face." The Word of God knows that those who serve as ambassadors of the Word are in danger among their hearers; for, being convicted, men hate them, being rebuked, they persecute them. The prophets suffer anything whatsoever: "A prophet is not without honor except in his own homeland and in his own house," which we also mentioned recently. God knows, then, when He sends the prophet, how many dangers he will take upon himself, and He says to him: "Do not be afraid before their face, for I am with you to deliver you, says the Lord." The things Jeremiah suffered are recorded: he was cast into a pit of mire, he remained there "eating one loaf a day" and drinking only water, and countless other things which his prophecy has made clear that he suffered. "Which of the prophets did your fathers not persecute?" is said to the Jews. […]

But our present question may, perhaps, be solved in this way, that as every man is a man of God, simply because God created him, but not every man is called a man of God, but only he who has devoted himself to God, such as Elijah and those who are called men of God in the Scriptures, thus every man might be said in ordinary language to be sent from God, but in the absolute sense no one is to be spoken of in this way who has not entered this life for a divine ministry and in the service of the salvation of mankind. We do not find it said of any one but the saints that he is sent by God. It is said of Isaiah as we showed before; it is also said of Jeremiah, "To whomsoever I shall send thee thou shalt go"; and it is said of Ezekiel, "I send thee to nations that are rebellious and have not believed in Me." The examples, however, do not expressly speak of a mission from the region outside life into life, and as it is a mission into life that we are enquiring about, they may seem to have little bearing on our subject. But there is nothing absurd in our transferring the argument derived from them to our question. They tell us that it is only the saints, and we were speaking of them, whom God is said to send, and in this sense they may be applied to the case of those who are sent into this life.

We are not ignorant that some refer these things, as being too great for Jeremiah, to our Savior and Lord; and one must know that most of them are in accord with Him and can be referred to the Savior, which I will set forth; but a few of the things said to Jeremiah press hard upon the argument, being unable, as they can with respect to the many, to be fitted to the Savior. What, then, are the things that fit the Savior? "To all to whom I shall send you, you shall go, and according to all that I command you, you shall speak. Do not be afraid before their face, for I am with you to deliver you, says the Lord." These would not yet seem to be referred to the Savior; but what follows—"and the Lord stretched out His hand to me and touched my mouth, and the Lord said to me: Behold, I have given my words into your mouth. Behold, I have set you this day over nations and kingdoms, to root out and to pull down"—presses hard upon the interpretation concerning Jeremiah. What nations did Jeremiah root out, what kingdoms did he overthrow? For it is written: "Behold, I have set you this day over nations and kingdoms, to root out and to pull down." And what authority did Jeremiah have "to destroy," which is said as if to Jeremiah in the phrase "and to destroy"? And how many so great did Jeremiah build up, that it should be said "and to build"? Jeremiah says: "I have not benefited, nor has anyone benefited me." How then has "to build and to plant" been given to him? How will "to plant" fit Jeremiah? These things, referred to the Savior, do not press hard upon the interpreter, since Jeremiah in these matters is a symbol of the Savior. […]

You should not consider the matter of age, he said, for you have learned through another prophet's words that "a man's gray hair is his wisdom." May you only be willing to continue, for you will have me as a companion by whose assistance you will accomplish everything: "Open your mouth, and I will fill it." Neither should you consider the number of those against whom you are about to speak, but consider me only, who is with you to deliver you, says the Lord. The Lord delivers, however, not so that the prophet will be free of persecutions and difficulties, for we read that he was severely afflicted. Instead, the Lord liberates one who suffers everything to overcome these tribulations rather than yielding to them.

(Vers. 7, 8.) And the Lord said to me: Do not say, I am a boy, for you shall go to all whom I shall send you, and whatever I command you, you shall speak. Do not be afraid of their faces: for I am with you to deliver you, saith the Lord. Do not consider your age, says he; for by another prophet speaking, you have learned: The wisdom of a man is in his gray hairs (Wis.