This is a song suggested for Vespers from the Iona Community and found in Heaven Shall Not Wait.
The structure is unusual, with each verse having two lines that are repeated as a response, one line similarly responded to, and the first two lines repeated. The text is on page two of this bulletin.
I cobbled the chords from the keyboard arrangement for my BIAB backing. The tune is by John Bell and is called MACDOWELL. It appears to be in several keys at once.