The Apostle spoke of the oath somewhat indefinitely: "men swear by the greater," that is, they swear by what is higher and more important than man. Probably he had in view the custom of his time, when people swore not only by the name of God, but also by heaven and earth, by the temple and the altar.
Yet all these forms of oath, according to Christ the Savior's own explanation, have one true meaning. Directly or indirectly, they refer to God, and in Him and His name they have their force and importance. "He who swears by the temple swears by it and by Him who dwells in it. And he who swears by heaven swears by the throne of God and by Him who sits upon it" (Mt 23:21-22).
But how do we dare to use the holy and dread name of God in our assurances and promises? Is such boldness permitted? In what cases is it permitted? The answer to all these questions can be found in one apostolic saying: "An oath for confirmation is the end of every dispute." That is, an oath is the final and extreme means of assurance in every case where dispute must be ended or doubt removed.
Therefore, if the dispute or doubt arising in relations among men is not so important as to require intensified measures for its removal, then an oath is not needed. If there are simple and nearer means for this, found in the nature and circumstances of the affairs and relationships, then an oath is not needed. If one can be satisfied with incomplete assurance without great harm, especially public harm, then an oath is not needed. In such cases, ordinary prudence will not advise recourse to the extreme means of assurance, and pious feeling should not allow an oath by the name of God.
For example, you may want your word in conversation or your promise in common life to be believed. In the multitude of such cases, most of them of little importance, recourse to an oath would be as bold as it is unnecessary. For the degree of assurance needed here, there are simple and nearer means.
Always speak the truth with precision and without evasiveness, and your simple word will be believed like an oath. Do not make promises unless you are certain they can be fulfilled, and fulfill the promises you have made without change. Then your simple promise will be believed like an oath.
To such cases belong the ancient commandment, "You shall not take the name of the Lord your God in vain" (Ex 20:7), the commandment of Christ, "Do not swear at all" (Mt 5:34), and the Apostle's exhortation: "Do not swear either by heaven or by earth or by any other oath. Let your yes be yes and your no be no, lest you fall into hypocrisy" (Jas 5:12).
But there are cases of another kind. In them, ordinary means are insufficient to remove doubt and attain assurance. Failure to attain assurance would be accompanied by extreme harm, not only private but also public. From this comes necessity, and from necessity, duty, to strive with utmost effort to reach the "end for confirmation," and to have recourse to the most extreme means of assurance possible.
The sovereign and the state require fidelity from subjects in general, and in particular services, offices, and commissions. Firm assurance of this fidelity is necessary, because without it public order would not be secured, and there would not even be public safety.
By what, then, shall fidelity be secured? By laws? But for laws to have their full force and effect, strict fidelity in their use is needed. Consequently the question proposed here is not answered, but only receives a special form: by what shall fidelity in the use of laws be secured?
By what, then? By honesty known beforehand? It is easier to find time and means for this within the limited circle of private relations than in the immeasurable expanse of state relations. Authority uses its nearest and most important instruments, no doubt, with prior testing and investigation, as far as the limited human eye reaches and penetrates.
But can testing and investigation decisively determine the honesty of each among thousands and tens of thousands of people before they are used as instruments of the state? Again the question returns: by what shall fidelity be secured?
By an honest word? An honest word can be accepted as security only from the mouth of a man whose honesty has been established. Where prior and complete knowledge of honesty is difficult to obtain, the word that declares itself honest does not secure anything. Who does not know that the so-called honest word is given even by those who have not secured its fulfillment for themselves, and who do not even think of fulfilling it?
By what, then, shall fidelity be secured? By fear of punishments? How unpleasant it would be, if it were possible, to found general peace on general fear alone. But this is impossible. There can be violations of fidelity which human insight cannot discover and human justice cannot pursue.
Fear of punishment is necessary and useful for restraining those inclined to crimes. Yet it is insufficient for forming the quality of faithful subjects. Thus the insufficiency of nearer and ordinary means for securing fidelity leads to the extreme means: sealing the promised fidelity with the great and dread name of God.
Then each person should honor fidelity as he reveres God. If anyone should think of boldly touching his promise, he would inevitably meet the name of God. This is not merely a sound pronounced, but the invoked power of God, which penetrates souls, tests hearts, blesses the faithful, and punishes the unfaithful.
This "end for confirmation," this extreme means of assurance among men, is not simply a human institution. The oath is not merely an invention of the art of civil government. The heavenly Kingdom itself receives, confirms, and sanctifies this support of the earthly kingdom. This is not hard to see, since God Himself swears.
"By Myself I have sworn, says the Lord" (Gen 22:16) to Abraham. The Apostle explains this word of the Lord precisely as an image of the divine oath: "When God made a promise to Abraham, because He could swear by no one greater, He swore by Himself" (Heb 6:13). There is no doubt that, by condescension, God here gives His promise the form of human assurance. Yet there is likewise no doubt that God takes into His hands only those earthly instruments which are pure and worthy of heaven.
An oath by the name of God for the faithful discharge of public service, or the faithful fulfillment of a public matter, is needed both to assure authority and society, and to strengthen the one who binds himself by fidelity. Does fidelity not often require not only self-denial, but even self-sacrifice?
Does it not meet temptations? Some are coarse, though they are not always as easy to repel as to notice. Others are subtle, and one can become entangled in them almost imperceptibly. The self-confident man will rely on himself in this. But he will hardly make an exception to the prophetic judgment that "every man is a lie" (Ps 115:2), that is, outside the help of God.
One who has more self-knowledge would not be at peace from doubt about himself, unless he had recourse to God and established his hope in Him. "O Lord, faithful in Your words and holy in all Your works" (Ps 144:13), bless the fidelity of my word and the holiness of my deed. Show me truth and righteousness. Grant me readiness for self-sacrifice for them. Grant me firmness to stand against the assaults of strong unrighteousness. Grant me foresight, so that I may not be entangled in the nets of cunning or partiality.
So it is natural for the heart of a man to speak, if he sincerely wishes to preserve fidelity in public service or a public matter. So also the form of oath prescribed by law from the days of our forefathers commands him to say: "May the Lord God help me in soul and body."
Let the thought of infidelity to an oath be far from us. But so that it may be driven still farther away, strike it as with an arrow by the dread word of God: "The Lord will not hold him guiltless who takes His name in vain" (Ex 20:7).
If "the Lord will not hold him guiltless who takes His name" vainly, uselessly, lightly, and without need, what should he expect who, giving an oath before God, uses the name of God with evil intent and sacrilegiously, so as to cover the impurity of his unfaithfulness with its holiness?
"You shall destroy all who speak falsehood" (Ps 5:7). But will You not destroy first of all, O Lord, those who speak falsehood before Your name and before Your face? They lie, like Ananias and Sapphira, not to men, but to You, God.
When the Apostle Peter rebuked Ananias with these very words, "You have not lied to men, but to God," Ananias, hearing these words, fell down and expired. Then Sapphira also, after a similar rebuke, "immediately fell down at his feet and expired" (Acts 5:4-5, 10).
This example, and many examples outside sacred history, show that falsehood before the name of God and before the face of God, perjured falsehood, seems to bring heavenly Justice to impatience. It draws down dread and sudden blows of fate.
I hope that, even without my assistance, you will join to these reflections on the importance of the oath a reflection on the importance of the matter for which you give the oath. On those whom you elect will depend no small part of public order, the peace of many, the peace of those properly dependent on you and entrusted to your care. Sometimes, perhaps, even the peace of some of you will depend on them, as well as the support of the dignity of your exalted estate.
Choose in such a way that you will not later reproach yourselves, and will not anger God. Find worthiness if it hides itself. Know how to attract it if it withdraws. Conversely, set a barrier against the ambition of unworthiness. Do not place yourselves beneath the unworthy by allowing them to outwit your action. Justify the generous trust placed in you by the autocratic authority.
May purity of intention and action draw the blessing of God upon the electors, upon the election, upon those elected, and upon the consequences of the election. Amen.