he visited the temple. ‘The more we know of God,’ Gresham Machen once said, ‘the more unreservedly we will trust him; the greater our progress in theology, the simpler and more childlike will be our faith.’ Isaiah would agree with him. Take a look at the ‘seraphs’ (6:2). Seraphs are angelic beings not mentioned elsewhere. The ‘living creatures’ of Revelation 4:6–9 are also said to have ‘six wings’ and may be identical. What is significant is not so much who they are, but what they are