Some time ago, in his "A Moment of Hope" radio commentary, a local preacher spoke of the power of words and how, if we want our lives to be hopeful, we need to keep our speech positive. He then quoted Proverbs 18:21 as wisdom on the subject: "Death and life are in the power of the tongue, and those who love it will eat its fruit."
So far, everything was fine—and then he went and spoiled it by saying (paraphrasing), "You can find that in the Jewish Testament of your Bible."
The Jewish Testament? What is that? There is no such thing! We could call the Old Testament "the Hebrew Testament" with some legitimacy because it was written in Hebrew, but what would make it Jewish? Was he trying to say that, if we read only the Old Testament, we would become followers of Judaism? Or, that the Jews somehow own the Old Testament? Or, that because the Old Testament is revered by Jews as their holy book, it is somehow inferior to "the Christian Testament?"
Certainly, the Bible never calls the Old Testament "the Jewish Testament." Paul calls it "the Holy Scriptures" in II Timothy 3:15. Jesus calls it "the Law of Moses and the Prophets and the Psalms" in Luke 24:44. In many places, the writers simply refer to it as "the word [of God or of the Lord]" or "the Scripture(s)." The only hint that the Old Testament "belongs" to the Jews is a misinterpretation of Romans 3:2, "to them were committed the oracles of God." This means only that the Jews are responsible for their accurate transmission throughout history, not that they apply only to Jews or that Jews exclusively possess them in some way.
No, this all stems from the mistaken idea that the Old Testament is the Old Covenant, "becoming obsolete and growing old . . . ready to vanish away" (Hebrews 8:13), while the New Testament is the New Covenant. Thus, to a "Christian" under the New Covenant, anything that appears in the Old Testament is of lesser value than what appears in the New