'Swear' in the Bible

Solomon was told, "Look, Adonijah is afraid of King Solomon, and he has grasped the horns of the altar, saying, 'Let King Solomon swear to me {first} that he will surely not kill his servant with the sword!'"

the king sent and summoned Shimei, and he said to him, "Did I not make you swear by Yahweh? I warned you, saying, 'On the day you go out and you go {anywhere whatsoever}, know for certain that {you will surely die}.' And you said to me, 'The word is good; I accept.'

{As Yahweh your God lives}, surely there is not a nation or a kingdom to which my lord has not sent me to seek you. [If] they would say, 'He is not here,' then he would make the kingdom or the nation swear that it could not find you.

Then the king said to him, "How many times must I make you swear that you shall not tell me [anything] but truth in the name of Yahweh?"