This Advent song has a text by Mary Louise Bringle and is sung to the tune of MORNING STAR.
Ryan’s parish sang it today and are very organised because they were doubtless familiar with the tune having sung “The King Shall Come When Morning Dawns” recently, which has the same tune.
I found the text for this song here (page 2) but had no luck at GIA, who hold the copyright, finding any sheet music.