'Oath' in the Bible

Yes, thus says the Lord God, “I will also deal with you as you have done, you who have despised the oath by breaking the covenant.

And he took a member of the royal family [the king’s uncle, Zedekiah] and made a covenant with him, putting him under oath. He also took the important leaders of the land,

As I live,’ says the Lord God, ‘surely in the country of the king (Nebuchadnezzar) who made Zedekiah [the vassal] king, whose oath he despised and whose covenant he broke, in Babylon Zedekiah shall die.

Now Zedekiah dishonored the oath by breaking the covenant, and behold, he gave his hand and pledged his allegiance, yet did all these things; he shall not escape.’”

Therefore, thus says the Lord God, “As I live, I will bring down on his own head My oath [made on My behalf by Nebuchadnezzar] which Zedekiah dishonored and My covenant which he broke.