The Asher windows depict the miracles of Jesus and the Nativity in this order - "The Draught of Fishes", "The Raising of Lazarus", "Healing the Leper", "The Three Wise Men", "The Nativity" and "The Shepherds in the fields". The nativity scene was used as the basis for one of New Zealand's Christmas postage stamps in 1970.The Quinn windows depict three parables, "The Good Samaritan", "The Wicked Husbandmen or Tenants" and "A Sower Went Forth to Sow".

Centred below the nine small windows in the portico is a wood carving of The Last Supper, based on the painting by Leonardo da Vinci on the wall of the Santa Maria Della Grazia Monastery in Milan. First church was presented with the carving in 1909 by Mrs T M Macdonald, a daughter of the Rev T S Forsaith, who had served for a time in Venice, where the carving is believed to have originated. It is a beautiful work of art and dedication and an inspiration to all who see it. The moment of time depicted is a dramatic one when Jesus says "One of you will betray me."