This is the 2335th most frequent Swedish word.
danske
"Danske" in Swedish means "Danish" (referring to something or someone from Denmark).
The word "danske" here is an adjective describing the nationality of the man, indicating that he is Danish.
Den danske mannen är vänlig.
The Danish man is friendly.
The word "danske" functions as an adjective describing the language that was used for communication, 'the Danish language', referring to the language from Denmark.
Jag talade med honom på danske språket.
I spoke with him in the Danish language.
In this sentence, "danske" is used as an adjective describing the churches, specifying that we are discussing churches from Denmark or with Danish characteristics.