'Swear' in the Bible

On that day, there will be five cities in the land of Egypt that speak the {language} of Canaan and swear an oath to Yahweh of hosts. One will be called "City of the Sun."

I have sworn by myself; a word that shall not return has gone forth from my mouth [in] righteousness: 'Every knee shall kneel down to me; every tongue shall swear.'

Hear this, house of Jacob, who are called by the name of Israel and came out from the waters of Judah, who swear by the name of Yahweh, and {invoke} the God of Israel, [but] not in truth and not in righteousness.

Whoever blesses himself in the land shall bless himself by the God of trustworthiness, and the one who swears an oath in the land shall swear by the God of trustworthiness, because the former troubles are forgotten, and they are hidden from my eyes.