Shed upon your Church, O Lord, the brightness of your light, that we, being illumined by the teaching of your apostle and evangelist John, may so walk in the light of your truth, that at length we may attain to the fullness of eternal life; through Jesus Christ our Lord, who lives and reigns with you and the Holy Spirit, one God, for ever and ever. Amen.
— Book of Common Prayers
(Painting of John the Evangelist by James B. Janknegt; http://www.bcartfarm.com/pp206.html)