The Old Testament and the New Testament. Is It a Covenant of Grace?

Bob Greene: The gospel is the storyline from Genesis to Revelation. It starts in Genesis 3.15, goes all the way to the end of the book. You have gospel in the Old Testament, law in the New Testament. Don't think in terms of law Old Testament, gospel New Testament, because you have both. He says it depends on who's making the promise and who's keeping it.