The Catechism in Questions & Answers

427. What is meant by the term “the ministry of the new covenant”?

This designation is derived from 2 Corinthians 3: 6 and serves to make a distinction from the old covenant, when the Mosaic Law—which was restricted to the people of Israel—was in effect. The most important thing in the new covenant is the message of God’s grace, the gospel, which is proclaimed by all those who bear the Apostle ministry. Beyond that, the ministry of the new covenant is active among all nations.