Easton's Bible Dictionary: M. G. Easton, M.A., D.D.

New Testament

(Lk. 22:20), rather "New Covenant," in contrast to the old covenant of works, which is superseded. "The covenant of grace is called new; it succeeds to the old broken covenant of works. It is ever fresh, flourishing, and excellent; and under the gospel it is dispensed in a more clear, spiritual, extensive, and powerful manner than of old" (Brown of Haddington). Hence is derived the name given to the latter portion of the Bible.

Original from The Bible Foundation - bf.org. They claim public domain status for their original text.