'As the Lord Lives' in the Bible

But David answered Rechab and his brother Baanah, sons of Rimmon the Beerothite, “As the Lord lives, the One who has redeemed my life from every distress,

David was infuriated with the man and said to Nathan: “As the Lord lives, the man who did this deserves to die!

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.”

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!”