If it is Danish, the speaker is probably not from Denmark. I should be able to understand it pretty well since it's read very slowly but I can only make out bout 2/3 of it, but from that I'm think it sounds like badly pronounced Danish or rather a mix between that and some sort of Low German. Maybe it's in a dialect from the border between Denmark or Germany or something like that, but it still has a foreign touch to it. It's definitely not Rigsdansk in any case.
And not Swedish or Norwegian either, if it's not a very archaich and unusual dialect that is. Hard to tell since I didn't understand everything of it, or rather didn't hear the words.
And yes, it is the Lord's Prayer, that much I did understand.
read fluently, understand well, speak badly;
read fluently, understand badly, can't speak;
read some, understand a bit, speak a few sentences;
heritage language, want to understand and speak but can't.