Meaning

noun a signed written agreement between two or more parties (nations) to perform some action

noun (Bible) an agreement between God and his people in which God makes certain promises and requires certain behavior from them in return

verb enter into a covenant

originFrom Middle English covenaunt, borrowed from Old French covenant (“agreement”), from Latin conveniēns, convenientem (“agreeing, agreeable, suitable, convenient”), present participle of conveniō (“to agree”). Cognate with convenient and convene.

Etymology from Wiktionary, CC BY-SA 3.0