Why is the language of Romans not found in the Gospels or the Old Testament?
The language of Romans is absent from the Gospels and Old Testament because it belongs to the revelation of the mystery—secrets held in God's mind but now revealed. The Old Testament operated under the economy of law for Israel, but God turned to the Gentiles, bringing something totally different in Paul's epistles.
Les explains that the language of Romans is not found in the Gospels or the Old Testament because it is part of the revelation Paul speaks of—the mystery, the secrets that had been held in the mind of God but are now revealed. He notes that the Old Testament was predominantly under the economy of law to the nation of Israel, with its temple worship, priesthood, and sacrifices. But now that God has turned to the Gentile, that economy had to slip off the scene, and we have something totally different. Les still insists the Old Testament dovetails with the New, but he challenges listeners to search the Scriptures and see that the same kind of language found in Romans and Paul's other epistles is not found back in the Gospels or the Old Testament.