This a lovely hymn by Richard Connolly. He usually set the hymn texts of the Australian poet James McAuley, but these words he wrote himself.
The text and melody are at Hymnary but you might already have it in the Australian Hymn Book or Together in Song. This would make a rousing recessional.
This isn’t really my style of music but his tunes generally have something in them to rise above the ordinary.
This is a stunning version by the Choir of Trinity College, University Melbourne, showing off their talent for dynamics.