'Sworn' in the Bible
"Any vow or sworn obligation that would bring affliction to her, her husband can confirm or nullify.
So now, promise me this with an oath sworn in the Lord's name. Because I have shown allegiance to you, show allegiance to my family. Give me a solemn pledge
Indeed, for forty years the Israelites traveled through the desert until all the men old enough to fight when they left Egypt, the ones who had disobeyed the Lord, died off. For the Lord had sworn a solemn oath to them that he would not let them see the land he had sworn on oath to give them, a land rich in milk and honey.
The Israelites did not attack them because the leaders of the community had sworn an oath to them in the name of the Lord God of Israel. The whole community criticized the leaders,
Jonathan said to David, "Go in peace, for the two of us have sworn together in the name of the Lord saying, 'The Lord will be between me and you and between my descendants and your descendants forever.'"Then David got up and left, while Jonathan went back to the city.
For many in Judah had sworn allegiance to him, because he was the son-in-law of Shecaniah son of Arah. His son Jonathan had married the daughter of Meshullam son of Berechiah.
You provided bread from heaven for them in their time of hunger, and you brought forth water from the rock for them in their time of thirst. You told them to enter in order to possess the land that you had sworn to give them.
I have vowed and solemnly sworn to keep your just regulations.
The Lord who rules over all has solemnly sworn, 'I will fill your land with enemy soldiers. They will swarm over it like locusts. They will raise up shouts of victory over it.'
But those in Jerusalem will view it as a false omen. They have sworn solemn oaths, but the king of Babylon will accuse them of violations in order to seize them.
So then, 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,
And since this was not done without a sworn affirmation -- for the others have become priests without a sworn affirmation,
but Jesus did so with a sworn affirmation by the one who said to him, "The Lord has sworn and will not change his mind, 'You are a priest forever'" --