The instruction is unique in being based on the usages and customs, and the material and appliances of the working craftsman of long ago, including those employed at the building of the first two Temples at Jerusalem.
It is progressive taking a different form in each degree and it reaches its climax in the Royal Arch degree; the teaching of which, far from taking another line (as so wrongly believed by many Masons) follows on from the Craft degrees, it is a high and Sublime degree, just as the second is higher than the first, that is in presenting a higher conception of our duty.
Title
1981 - SOME THOUGHTS ON THE ROYAL ARCH - Bro G M Harris.