'Oath' in the Bible

But if you report this incident, we'll be free from the oath to which you've made us swear."

Then Joshua made everyone take the following oath at that time. He said: "Cursed in the presence of the LORD is the man who restores and rebuilds this city of Jericho! He will lay its foundation at the cost of his firstborn, and at the cost of his youngest he will set up its gates."

They made a treaty with them, guaranteeing their lives with a covenant, and the leaders of the congregation confirmed it with an oath to them.

The Israelis did not attack them, because the leaders of the congregation had made an oath with them in the name of the LORD, the God of Israel. Nevertheless, the entire congregation grumbled against their leaders.

So this is what we'll do to them: we'll let them live, so that wrath won't come upon us because of the oath that we swore to them."