It is nothing strange that he connects swearing with worship, for it is a kind of divine worship. Hence the Scripture, stating a part for the whole, often mentions swearing in this sense, as including the service due to God. But the Prophet pronounces here generally a curse on all the superstitious, who worshipped fictitious gods; and then he adds one kind of worship, and that is swearing. I shall not here speak at large, nor is it— necessary, on the subject of swearing. We know that the use of an oath is lawful when God is appealed to as a witness and a judge, on important occasions; for God’s name may be interposed when a matter requires proof, and when it is important; but God’s name is not to be introduced thoughtlessly. Hence two things are especially required in an oath—that all who swear by his name should present themselves with reverence before his tribunal, and acknowledge him to be the avenger if they take his name falsely or inconsiderately This is one thing. Then the matter itself, on account of which we swear, must be considered; for if men allow themselves to swear by God’s name respecting things which are trifling and frivolous, it is a shameful profanation, and by no means to be borne. For it is a singular favor on the part of God, that he allows us to take his name when there is any controversy among us, and when a confirmation is necessary. As then we thus receive through kindness the name of God, it is surely a great favor; for how great is the sanctity of that name, though it serves even earthly concerns? God then does so far accommodate himself to us, that it is lawful for us to swear by his name. Hence a greater seriousness ought to be observed by us in oaths, so that no one should dare to interpose an oath except when necessity requires; and we should also especially take heed lest God be called a witness to what is false. For how great a sacrilege it is to cover a falsehood with his name, who is the eternal and immutable truth! They then who swear falsely by his name change God, as far as they can, into what he is not. We now sufficiently understand how swearing is a kind of divine worship, because his honor is thereby given to God; for his majesty is, as it were, brought before us, and as it is his peculiar office to know and to discover hidden things, and also to maintain the truth, this his own work is ascribed to him. Now when any one swears by a mortal, or by the sun, or by the moon, or by creatures, he deprives God in part of his own honor.