'Vowed' in the Bible

Then all the people came to persuade David to eat bread while it was still day; but David vowed, saying, “May God do so to me, and more also, if I taste bread or anything else before the sun goes down.”

She replied, “Please, may the king invoke the Lord your God, so that the avenger of blood will not increase the loss, and they will not eliminate my son!”“As the Lord lives,” he vowed, “not a hair of your son will fall to the ground.”

And it came to pass after forty years, that Absalom said unto the king, I pray thee, let me go and pay my vow, which I have vowed unto the LORD, in Hebron.

For thy servant vowed a vow while I abode at Geshur in Syria, saying, If the LORD shall bring me again indeed to Jerusalem, then I will serve the LORD.

But in response, Ittai vowed to the king, “As the Lord lives and as my lord the king lives, wherever my lord the king is, whether it means life or death, your servant will be there!”

The king said to Shimei, "You won't die." The king vowed an oath concerning this.