New Revised Standard Version
Then she said, “Please, may the king keep the LORD your God in mind, so that the avenger of blood may kill no more, and my son not be destroyed.” He said, “As the LORD lives, not one hair of your son shall fall to the ground.”

Contemporary English Version
"Please," she replied, "swear by the LORD your God that no one will be allowed to kill my son!" He said, "I swear by the living LORD that no one will touch even a hair on his head!"

New American Bible
But she said, “Please, let the king remember the LORD your God, that the avenger of blood may not go too far in destruction and that my son may not be done away with.” He replied, “As the LORD lives, not a hair of your son shall fall to the ground.”

Douay-Rheims Bible
And she said: Let the king remember the Lord his God, that the next of kin be not multiplied to take revenge, and that they may not kill my son. And he said: As the Lord liveth, there shall not one hair of thy son fall to the earth.

And she said: Let the king remember the Lord his God, that the next of kin be not multiplied to take revenge, and that they may not kill my son. And he said: As the Lord liveth, there shall not one hair of thy son fall to the earth.

let the king

Genesis 14:22 And he answered him: I lift up my hand to the Lord God the most high, the possessor of heaven and earth,

Genesis 24:2,3 And he said to the elder servant of his house, who was ruler over all he had: Put thy hand under my thigh, . . .

Genesis 31:50 If thou afflict my daughters, and if thou bring in other wives over them: none is witness of our speech but God, who is present and beholdeth.

1 Samuel 20:42 And Jonathan said to David: Go in peace: and let all stand that we have sworn both of us in the name of the Lord, saying: The Lord be between me and thee, and between my seed and thy seed for ever. [43] And David arose, and departed: and Jonathan went into the city.

thou, etc.

Numbers 35:19,27 The kinsman of him that was slain, shall kill the murderer: as soon as he apprehendeth him, he shall kill him. . . .

Deuteronomy 19:4-10 This shall be the law of the slayer that fleeth, whose life is to be saved: He that killeth his neighbor ignorantly, and who is proved to have had no hatred against him yesterday and the day before: . . .

Joshua 20:3-6 That whosoever shall kill a person unawares may flee to them, and may escape the wrath of the kinsman, who is the avenger of blood. . . .

As the Lord

1 Samuel 14:45 And the people said to Saul: Shall Jonathan then die, who hath wrought this great salvation in Israel? this must not be: As the Lord liveth, there shall not one hair of his head fall to the ground, for he hath wrought with God this day. So the people delivered Jonathan, that he should not die.

1 Samuel 28:10 And Saul swore unto her by the Lord, saying: As the Lord liveth, there shall no evil happen to thee for this thing.

Jeremiah 4:2 And thou shalt swear: As the Lord liveth, in truth, and in judgment, and in justice: and the Gentiles shall bless him, and shall praise him.

not one hair

1 Kings 1:52 And Solomon said: If he be a good man, there shall not so much as one hair of his head fall to the ground: but if evil be found in him, he shall die.

Matthew 10:30 But the very hairs of your head are all numbered.

Acts 27:34 Wherefore, I pray you to take some meat for your health's sake: for there shall not an hair of the head of any of you perish.