'Swear' in the Bible

And I pass over by thee, and I see thee, And lo, thy time is a time of loves, And I spread My skirt over thee, And I cover thy nakedness, And I swear to thee, and come in to a covenant with thee, An affirmation of the Lord Jehovah, And thou dost become Mine.

I also swore to them in the wilderness that I would not bring them into the land which I had given them, [a land of plenty] flowing with milk and honey, which is the ornament and glory of all lands,

Therefore this is what the Lord God says: I swear that the nations all around you will endure their own insults.

I swear in My zeal and fiery rage: On that day there will be a great earthquake in the land of Israel.