If we consider the unconditional word of absolution as the basic word, model and matrix of an evangelical sermon, then there are four decisive features that make this sermon stand out. These features have to do with grammar and pragmatics. 1. The sermon is not a discourse in the third person about something but an address in the second person, where an “I” addresses a “you.” 2. The verb is formulated in the present tense or in the present perfect (Note: The relation between the present and present perfect corresponds to the correlation between what was “won” and what is “distributed”). 3. The performative verb used in the present or present perfect is semantically and pragmatically that of “promise” – a valid promise with immediate effect; it creates community. 4. The “I” of the preacher who speaks legitimates itself, implicitly or explicitly, as authorized to make this promise – like the prophet with the message formula, “thus says the Lord:…” The preacher is an authorized representative who stands in the place of his Lord and is authorized and empowered to speak on his behalf. The divine service is begun and continued in the name of the triune God. Baptism, absolution, and the Lord’s Supper are celebrated in this name. The sermon is delivered in this name. And the preacher hears and takes to heart the trinitarian blessing promised by the words that many pastors use to greet the congregation before the sermon: “The grace of our Lord Jesus Christ, the love of God, and the communion of the Holy Spirit be with you all” (2 Corinthians 13:13).
Oswald Bayer, “Preaching the Word”, from Justification Is For Preaching, pages 202-203