How does Geoffrey of Monmouth use imagery in The History of the Kings of Britain?

Imagery:

"The priests who had been elected and the faithful who were committed to their care were butchered side by side, hurrying off, as it were, in a thronged and eager fellowship, towards the joys of the Kingdom of Heaven, as if to their own appointed resting-place...."

"Merlin obeyed the King's orders and put the stones up in a circle round the sepulchre, in exactly the same way as they had been arranged on Mount Killaraus in Ireland, thus proving that his artistry was worth more than any brute strength..."