'Oath' in the Bible
Therefore he promised with an oath to give her whatever she asked.
"Woe to you, blind guides, who say, 'Whoever swears by the temple, it is nothing! But whoever swears by the gold of the temple is bound [by his oath].'
And, 'Whoever swears by the altar, it is nothing! But whoever swears by the gift [that is] on it is bound [by his oath].'
But Jesus was silent. And the high priest said to him, "I put you under oath by the living God, that you tell us if you are the Christ, the Son of God!"
And again he denied [it] with an oath, "I do not know the man!"
Then he began to curse and to swear with an oath, "I do not know the man!" And immediately a rooster crowed.
And he began to curse and to swear with an oath, "I do not know this man whom you are talking about!"
Therefore, [because he] was a prophet and knew that God had sworn to him with an oath to seat {one of his descendants} on his throne,
For people swear by what is greater [than themselves], and the oath for confirmation [is the] end of all dispute for them.
In the same way God, [because he] wanted to show even more to the heirs of the promise the unchangeableness of his resolve, guaranteed [it] with an oath,
And by as much as [this was] not without an oath (for these on the one hand {have become priests} without an oath,
but he with an oath by the one who said to him, "The Lord has sworn and will not change his mind, 'You [are] a priest {forever}'"),
For the law appoints men [as] high priests who have weakness, but the statement of the oath, after the law, [appoints] a Son, who is made perfect {forever}.
Now above all, my brothers, do not swear either by heaven or by earth or by any other oath, but let your yes be yes and your no, no, in order that you may not fall under judgment.