'As the Lord Lives' in the Bible
And David answered Rechab and Baanah his brother, sons of Rimmon the Beerothite, As the Lord lives, Who redeemed my life out of all adversity,
Then David's anger was greatly kindled against the man, and he said to Nathan, As the Lord lives, the man who has done this is a son [worthy] of death.
Then she said, I pray you, let the king remember the Lord your God, that the avenger of blood destroy not any more, lest they destroy my son. And David said, As the Lord lives, there shall not one hair of your son fall to the earth.
But Ittai answered the king, As the Lord lives, and as my lord the king lives, wherever my lord the king shall be, whether for death or life, even there also will your servant be.