A very important and popular word in Mormonism. LDS covenants are always bilateral, conditioned on a person’s obedience. If Mormons promise to do their part (obedience), then God will do His part (blessings). “A covenant is a sacred agreement between God and a person or group of people. God sets specific conditions, and He promises to bless us as we obey those conditions. When we choose not to keep covenants, we cannot receive the blessings, and in some instances, we suffer a penalty as a consequence of our disobedience" (True to the Faith, p. 44).
Almost everything in Mormonism is considered a covenant. “Each ordinance and requirement to man for the purpose of bringing to pass his salvation and exaltation is a covenant” (Achieving a Celestial Marriage Student Manual, p. 197).
Biblical Christianity teaches that the most important covenant, the new covenant, is unilateral (Jeremiah 31:31-34). God does all the work. No conditions are attached.