This ancient song being added to Breaking Bread for 2025 by OCP, seems to be there due to a new translation from ICEL promulgated by USCCB. The original Latin text is by Thomas Aquinas and it is set to DUGUET. With a different translation it turned up in a post of mine called “Songs for a Corpus Christi Mass.” It is also suitable for Adoration.
I made a backing for this years ago.
I can’t find a clip with the new translation, so Latin will have to do.