If all else fails, you can throw the words up on the jumbotron and have them change colors to the music!
OK, maybe that's not the best method. Read the article for lots of tips.
By the way, this means we have touched on two of the major parts of Luther's Deutsche Messe (German Mass). Look for more posts on this in the future.
In the mean time, perhaps this version is a little more desirable than liturgical karaoke. Plus, you get the added bonus of the Christmas hymn in the latter half of the recording.
By the way, the Christmas hymn (whose name escapes me - I believe it is in LW) is a fine example of how to tackle a hymn with a lot of verses. No one sings all of the verses at once. Instead, different groups pick up different verses. Also, the tempo helps keep things moving along.