'God the Father' is Arthur's theme, helped by Luke 15:20-24
20 So he got up and went to his father. “But while he was still a long way off, his father saw him and was filled with compassion for him; he ran to his son, threw his arms around him and kissed him. 21 “The son said to him, ‘Father, I have sinned against heaven and against you. I am no longer worthy to be called your son.’ 22 “But the father said to his servants, ‘Quick! Bring the best robe and put it on him. Put a ring on his finger and sandals on his feet. 23 Bring the fattened calf and kill it. Let’s have a feast and celebrate. 24 For this son of mine was dead and is alive again; he was lost and is found.’ So they began to celebrate.