Possible Clues:

• There's nothing in the rich to be in vain, by the sound of it, for the gods
• Some rich organic fluid in the veins of gods
• Blood of the gods - o, rich stuff
• Fluid said to flow in veins of gods in Greek mythology
• I love going round church — right medium to bring the divine alive?
• Part of a rich orange vein?
• In Greek mythology, the fluid said to flow in the veins of the gods
• By the sound of it, in vain in gods of old
• Sometimes I chortle at watery humour
• Blood of the ancient gods