The benediction 'God Be In My Head' often forms part of funeral ceremonies. This week's presenter, Tom Robinson, heard it at his own father's recent memorial service, which led him to reflect upon how it's refrain resonates in our lives, both spiritually and in secular contexts. He draws upon the words of Martin Luther King, John Wesley and Evelyn Waugh, among others, with music by Peteris Vasks, Hank Williams, Ben Harper and Walford Davies. The producer is Alan Hall. This is a Falling Tree production for BBC Radio 4.