'Swearing' in the Bible

In that day there are five cities in the land of Egypt, Speaking the lip of Canaan, And swearing to Jehovah of Hosts, 'The city of destruction,' is said of one.

Hear ye this, O house of Jacob, Who are called by the name of Israel, And from the waters of Judah came out, Who are swearing by the name of Jehovah, And of the God of Israel make mention, Not in truth nor in righteousness.

So that he who is blessing himself in the earth, Doth bless himself In the God of faithfulness, And he who is swearing in the earth, Doth swear by the God of faithfulness, Because the former distresses have been forgotten, And because they have been hid from Mine eyes.