During choir practice, one of the members of the choir told what it meant to her. Her husband was dying of brain cancer, and she found in the hymn a source of strength.
She had to be at the hospital on the day the choir sang "Many Gifts, One Spirit," but the sound and light crew of TIC recorded the hymn for her benefit.
When they listened to it together, they found themselves in what the ancient Celts called a "thin place." That's a place where the skein separating heaven and Earth is so thin that the beauty of our Merciful Heavenly Father shines through it.
The husband has recently gone to be with our Lord.