In the northern hemisphere this would be an Easter song, but for Shirley Murray writing in New Zealand it is a spring carol celebrating new life in the Church. It is 140 in Alleluia Aotearoa.
The text and Colin Gibson‘s ballistic setting are at Hope Publishing.
Making sense of the 2/4,4/4,5/4 etc tune to make a BIAB backing needed a bit of fancy footwork. Playing it on a keyboard would be wild.