J. Douglas MacMillan has been held at that institution in his honour. According to Hywel Jones, MacMillan's preaching was marked by "powerful originality and strong orthodoxy". He is best known for his book "The Lord Our Shepherd" (). This is an exposition of Psalm 23, originally given to the Evangelical Movement of Wales in 1979. MacMillan drew on his 12 years of experience as a shepherd to argue that the shepherd theme pervades the entire psalm. MacMillan wrote a number of other books including "Wrestling with God" () consisting of addresses on the life of Jacob given to the Evangelical Movement of Wales
Psalm 102 where it is split as an antiphon into a "call" ("Lord, listen to my prayer", or "Hear my prayer, O Lord") and the response ("and let my cry come unto Thee"). This psalm occurs in the Monastic office of St Benedict (480-547) in the Saturday vigils or Matins. It occurs in the same place in the Roman Breviary of St Pius V (1568) and occurs at Saturday Terce in the Roman Breviary of St Pius X (1911). In the revised office of Pope Paul VI (1971) the Psalm occurs on Tuesday Week 4 Vigils The second verse is set in