Unde de cultu Dei exteriori duo declaremus (divino auxilio) salutis documenta, scilicet: 1) Primum exterioris cultus Dei exhibitionem debitam; 2) Secundum circa hec oriendarum questionum solutionem certam.

Therefore, we can illustratre (with God's help) two useful teachings about the external worship of God: 1) The first, concerning the rightful display of the external worship of God; 2) The second, concerning the certain solution to the questions that arise about these things.

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This sermon is part of a group (sermons 5-8, from Sunday Invocavit to Wednesday after Invocavit) developing the topic of the first commandment.  This sermon independently develops the second point of the main division of the previous sermon (T19 Sunday Invocavit).