Bible Verses About Oaths: Confirming covenants

Who answered, Wee sawe certainely that the Lord was with thee, and wee thought thus, Let there be nowe an othe betweene vs, euen betweene vs and thee, and let vs make a couenant with thee.

Nowe therefore come and let vs make a couenant, I and thou, which may be a witnes betweene me and thee.

The God of Abraham, and the God of Nabor, and the God of their father be iudge betweene vs: But Iaakob sware by the feare of his father Izhak.

So Ionathan made a bond with the house of Dauid, saying, Let the Lord require it at the hands of Dauids enemies.

And againe Ionathan sware vnto Dauid, because he loued him (for he loued him as his owne soule)