A more thorough explanation:

IN DEI NOMINE

IN DEI NOMINE is a Latin phrase that means "in the name of God." It was commonly used in historical writs as an opening phrase.

Example 1: "In Dei nomine, let it be known that John Smith is hereby appointed as the new governor of this land."

Example 2: "In Dei nomine, we declare this marriage to be valid and binding."

The examples illustrate how the phrase "In Dei nomine" was used to indicate that an action or decision was being made in the name of God. In the first example, John Smith's appointment as governor was being made with the authority of God. In the second example, the marriage was being recognized as valid with the blessing of God.