This is the second biblical answer to religious questions, from an upcoming compendium based on a catechism.
What unity is there between the Old and New Testaments?
The unity between the Old and New Testaments is that of the one God who is fulfilling his purpose in the world, among men, since before the creation of the world (1 Peter 1:20). When Adam and Eve sinned, the divine plan of salvation was instituted. As early as Genesis 3:15, God indicates his knowledge and determination of the ultimate victory over Satan.
This early indication also describes the unity between the testaments as one of divine concern for man’s eternal destiny. Though the Old Testament brings a recognized emphasis on the earthly, physical state of God’s people, the eternal is not absent. The spiritual and heavenly focus come into full bloom in Christ.
As God worked in the world, Scriptures were produced to register to all mankind, for all time, what he was doing. Some have called this progressive revelation, but since the term “progressive” might connote that previous knowledge was imperfect or out of date, it has been suggested that it be termed cumulative revelation./1
Such works as Homer Hailey’s From the Day of Creation to Eternity to the more recent work of Frank Chesser, Portrait of God, successfully trace what has been called the “golden thread” of redemption through holy Scripture.
1/ I am unable at present to locate the source of this suggestion.
The second biblical answer to religious questions.