Side note: If your church does have deaf people then go on signing, this does not refer to your church then.
From what I can tell, church sign language teams are on the decline in churches so this may not pertain to your church anymore. But there was a time from roughly 1999-2006 that sign language was a strong ministry within each church and a church was only relevant if they had a sign language team that could sign to the latest Michael W. Smith CD....
The irony of course was that a whole ministry was being developed around something to which there was no target audience in each church. That's right, churches had the sign language team when no one in the church understood ASL, nor were their any deaf people. Of course there was the off chance that a deaf person would walk in our church and then bingo, we are all of a sudden very relevant to that deaf person.
Of course there could be those 50 other guests who would walk in that were not deaf throughout the service and be entirely confused at what kind of cult-like ritual is going on in here complete with white gloves?
As I investigated this mysterious ministry further, there were more difficulties in operation: The sign language teams were not signing the songs word-for-word! They were interpretively signing the song that told the "gist" of the song complete with over-exaggerated dance moves!
Great, so if a deaf person did come to church, the one ministry that would focus on them would in no way actually tell them what is going on in the song word-for-word, but rather the song would be directed towards them as that they could understand the "gist" of the song.
But I guess this is all part of the plan to have organized dance teams allowed to interpretively dance to a song in church....which is perfectly fine to me.