I was unclear about the case and the meaning of Domino.
So I checked the grammar, and found that
1. (if dative,) this may be the dative of whither, since the following lines have jubilemus Deo salutari nostro and jubilemus ei, which are taking this usage of dative.
2. (if dative,) this may be the dative of interst, meaning rejoice in us somehow benefits the God.
3. (if ablative,) this may be the ablative of cause. This usage is mainly applied to the verbs of emotion, and the ablative noun seems to be mostly abstractive, like "by the love of you", "from hate", "from hope", etc.
(This dative also expresses the cause of event.)
But, I could not make sure if this dative is used in personal noun, like Guillelmo, Ciceroni, tibi, Domino ("because of the Lord").
So I need to be informed about if this dative is used in personal noun.
Are these all possible meaning ? Or ?
Do you have other understanding ?