'Oath' in the Bible

But being a prophet, and having in mind the oath which God had given to him, that of the fruit of his body one would take his place as a king,

And Paul, after waiting some days, went away from the brothers and went by ship to Syria, Priscilla and Aquila being with him; and he had had his hair cut off in Cenchrea, for he had taken an oath.

Do this, then, which we say to you: We have four men who have taken an oath;

Go with these, and make yourself clean with them, and make the necessary payments for them, so that they may be free from their oath: and everyone will see that the statements made about you are not true, but that you put yourself under rule, and keep the law.

And when it was day, the Jews came together and put themselves under an oath that they would take no food or drink till they had put Paul to death.

And more than forty of them took this oath.

And they came to the chief priests and the rulers and said, We have taken a great oath to take no food till we have put Paul to deat

But do not give way to them, for more than forty of them are waiting for him, having taken an oath not to take food or drink till they have put him to death: and now they are ready, waiting for your order