'Swear' in the Bible

And if they say, 'Jehovah liveth,' Surely to a falsehood they swear.

And it hath come to pass, If they learn well the ways of My people, To swear by My name, 'Jehovah liveth,' As they taught My people to swear by Baal, Then they have been built up in the midst of My people.

And thou givest to them this land that thou didst swear to their fathers to give to them, a land flowing with milk and honey,

And swear to them doth Gedaliah son of Ahikam, son of Shaphan, and to their men, saying, 'Be not afraid of serving the Chaldeans, abide in the land, and serve the king of Babylon, and it is well for you;