Protestant tune. Don't bother.
Protestants wanted a separation between church and state. The fact that the secular world ended up being more powerful and more influential in people's lives shows their errors. Now they sing songs like "Where is the line for Jesus?" and wonder what went wrong.
This isn't a Christmas Carol just a song to get people thinking.
O Holy Night lyrics were written by a "part time" Catholic ( I won't say fallen away) and the music was written by a Jew. Your point??