The Great Figure (title)
In addition to its spiritual connotations, the title also sounds a bit like an advertisement. (Step right up, ladies and gents – see "The Great Figure." Only two bucks a pop!) The poem makes technology and the American city sound mysterious and exciting.
Among the rain and lights (lines 1-2)
The beginning of the poem combines a natural image (rain) with man-made city lights. The city isn't just some impersonal, anonymous place. It's a living thing that changes like (and with) the weather.
I saw the figure 5 in gold (lines 3-4)
The golden figure combines traditional religious imagery (think gold crosses or the halos of saints) with American showiness and the suggestion of money.