'Oath' in the Bible

Then he will say with an oath, I will not be a helper, for in my house there is no bread or clothing: I will not let you make me a ruler of the people.

The Lord has taken an oath, saying, My design will certainly come about, and my purpose will be effected:

And the Lord will give the knowledge of himself to Egypt, and the Egyptians will give honour to the Lord in that day; they will give him worship with offerings and meal offerings, and will take an oath to the Lord and give effect to it.

By myself have I taken an oath, a true word has gone from my mouth, and will not be changed, that to me every knee will be bent, and every tongue will give honour.

For this is like the days of Noah to me: for as I took an oath that the waters of Noah would never again go over the earth, so have I taken an oath that I will not again be angry with you, or say bitter words to you.

The Lord has taken an oath by his right hand, and by the arm of his strength, Truly, I will no longer give your grain to be food for your haters; and men of strange countries will not take the wine for which your work has been done:

So that he who is requesting a blessing will make use of the name of the true God, and he who takes an oath will do so by the true God; because the past troubles are gone out of mind, and because they are covered from my eyes.