theit and the Text Authority absurdity

I suppose it would be too much to hope that "theit" here is an inputting error that should be retyped as "their".

Also, what is this Text Authority ridiculosity?? When I searched for "Songs of praise the angels sang", I got three hits: the hymn itself, the one with "theit" in the first line, and "Songs of praise the angels sang" that linked to "text/Text_Authority"... Is it sabotage, or a test, or what?