A covenant, in its most general sense, is a solemn promise to do or not do something specified.
A covenant can be from one person to another. Or from one person to a communtiy. Covenants may be formal promises under oath.
Covenants have been made by God with humanity.
An example of a covenant made in Judaism is when God made a covenant with Abraham that He would bless his descendants making them more numerous than the stars.
In Christianity God made a covenant with Jesus called the "new covenant", in which Christ's sacrifice on the cross would atone for the sins of all mankind.
In Islam, God enters into a covenant with Muhammad, impressing into his shoulder the seal of prophecy.
In Indo-Iranian religious tradition, Mithra-Mitra is the hypostasis of covenant, and hence keeper and protector of moral, social and interpersonal relationships, including love and friendship.
In living Zoroastrianism, which is one of the two primary developments of Indo-Iranian religious tradition, Mithra is by extension a judge, protecting agreements by ensuring that individuals who break a covenant do not enter Heaven.
