'Swore' in the Bible

She said to him, "My lord, you swore by Yahweh your God to your servant, 'Solomon your son surely shall become king after me, and he will sit upon my throne!'

Then the king swore and said, "{As Yahweh lives}, who has saved my life from all trouble,

surely as I swore to you by Yahweh the God of Israel, saying, 'Solomon your son shall surely be king after me, and he shall sit on my throne in my place,' surely I shall do so this [very] day."

And look, Shimei the son of Gera the son of the Benjaminite from Bahurim is with you. Now he {cursed me severely} when I went to Mahanaim, but he came down to meet me at the Jordan, so I swore to him by Yahweh, 'I surely will not kill you with the sword.'

Then King Solomon swore by Yahweh, saying, "Thus may God do to me and thus may he add, if Adonijah hasn't spoken this thing at the expense of his life.