fence

How long will ye imagine mischief against a man? ye shall be slain all of you: as a bowing wall shall ye be, and as a tottering fence.

Then shall they behold me coming from above in the light of my Father with the power and honour of the holy angels. Then at my coming shall the fence of fire of paradise be done away—because paradise is girt round about with fire. And this shall be that perpetual fire that shall consume the earth and all the elements of the world.

The country is encircled by a natural fence and is very difficult to attack and cannot be assailed by large forces, owing to the narrow passes, with theft overhanging precipices and deep ravines, and the rugged character of the mountainous regions which surround all the land.