While convoluted in King James English, this passage refers to the Lord making the way easy for his followers. For ancient (and not so ancient) travelers, mountains were great obstacles. Within modern church history we need look no farther than the Exodus to Utah for examples of the difficulty in crossing mountains. The Lord indicates that such obstacles will become a "way" or a road. The Lord will create "ways" through the mountains. Highways will be built up - and the travelers on the Lord's way will not face obstacles.