Whom or what is the Holy Spirit? The question might sound somewhat irreverent, particularly as we celebrate Pentecost, but sometimes He is almost “the forgotten God”, as a bishop from my youth liked provocatively to call Him. For as much as we hold firm to the doctrine of the Holy Trinity, in practice God the Father and God the Son are more often to the fore, whereas God the Holy Spirit can be somewhat overlooked – even though we invoke Him in every sign of the Cross and appeal to Him at the end of every prayer and hymn of the Church’s liturgy. The feast of Pentecost, however, seeks to heal our amnesia, as it were, and to rekindle our explicit faith and devotion to He Whom Our Lord describes as “the Counsellor… whom the Father will send in my name [Who] will teach you all things, and bring to your remembrance all that I have said to you” (Jn 14:26).