6 Bible Verses about Oaths, Divine

For when God made a promise to Abraham, since he had no one greater by whom to swear, he swore by himself, saying, "I will surely bless you and multiply you."

Men swear by one greater than themselves, and in all their disputes the oath is final for confirmation. So when God desired to show more convincingly to the heirs of the promise the unchangeable character of his purpose, he interposed with an oath, so that, by two unchangeable things in which it is impossible for God to lie, we who have taken refuge would have strong encouragement to take hold of the hope set before us.

To perform the mercy promised to our fathers and to remember his holy covenant, the oath which he swore to our father Abraham:

And so, because he was a prophet, and knew that God had sworn with an oath to him that he would set one of his descendants on his throne,

For it is declared of him, "You are a priest forever, after the order of Melchizedek." On the one hand, a former commandment is set aside because of its weakness and uselessness (for the law made nothing perfect); and on the other hand, a better hope is introduced, through which we draw near to God.read more.
And it was not without an oath. Those who formerly became priests took their office without an oath, but he became a priest with an oath through the One who said to him, "The Lord has sworn and will not change his mind, 'You are a priest forever.'" Because of this oath, Jesus has become the guarantee of a better covenant. The former priests were many in number, because they were prevented by death from continuing in office; but he holds his priesthood forever, because he continues for ever. Therefore he is able also to save forever those who draw near to God through him, since he always lives to make intercession for them. For it was fitting that we should have such a high priest, holy, blameless, unstained, separated from sinners, exalted above the heavens. He does not need, like those high priests, to offer up daily sacrifices, first for his own sins and then for the sins of the people, because he did this once for all when he offered up himself. For the Law appoints men as high priests who are weak, but the word of the oath, which came after the Law, appoints a Son who has been made perfect forever.

Therefore I was angry with that generation, and said, 'They always go astray in their hearts; and they have not known my ways.' As I swore in my wrath, 'They shall never enter my rest.'"