"On Preaching" from the Confessions (#22)

[Speaking of Malachi 1:11] (T)he very words of the prophet express his meaning. For they first say this, namely, that the name of the Lord will be great. This is accomplished by the preaching of the Gospel. For through this the name of Christ is made known, and the mercy of the Father, promised in Christ, is recognized. The preaching of the Gospel produces faith in those who receive the Gospel. They call upon God, they give thanks to God, they bear afflictions for their confession, they produce good works for the glory of Christ. Thus the name of the Lord becomes great among the Gentiles (bookofconcord.org: Apology XXIV: 32).