the.com/covenant

means A binding agreement between two or more parties — historically carrying a sacred or near-sacred weight that an ordinary contract doesn't.

from From Old French 'covenant,' the present participle of 'covenir,' meaning 'to agree, to come together' — itself from Latin 'convenire' ('con-' meaning 'together' + 'venire' meaning 'to come'). So at its root a covenant is simply a 'coming-together,' a meeting of parties and wills. The word entered biblical translation early on, used for God's binding agreements with humanity (Noah, Abraham, Moses), and that sacred usage gave it the moral heft it still carries — the sense that this is a promise witnessed by something larger than the people making it.