testament
noun
°A solemn, authentic instrument in writing, by which a person declares his or her will as to disposal of his or her inheritance (estate and effects) after his or her death, benefiting specified heir(s).
°One of the two distinct revelations of the Judeo-Christian God's purposes toward man; a covenant; also, one of the two general divisions of the canonical books of the Biblical Scriptures, in which the covenants are respectively revealed: the Old Testament and the New Testament; -- often limited, in colloquial language, to the latter.
synonyms: will, last will