This is a terrific text by John Bell set to his arrangement of BONNIE GEORGE CAMPBELL an Scottish folk song. There is public domain sheet music for this old tune easily found on the internet.
The text and the melody line are at Hymnary so go and read it, you won’t be disappointed.
I also have it in his book Heaven Shall Not Wait (which GIA says is out of print but still appears to be available at Wild Goose) and I really should sit down and go through all his books – I just get annoyed that I often have to work out the chords for myself. This time, however, the chords are available.
John Bell suggests it could also be sung to SLANE.