Luke 3:5

Every valley shall be filled, and every mountain and hill shall be brought low; and the crooked shall be made straight, and the rough ways shall be made smooth;

Every valley shall be filled,.... Luke cites more out of the same prophecy, as relating to the times of John the Baptist, and the Messiah, than the other Evangelists Matthew and Mark do: in the prophet it is, "every valley shall be exalted"; which is done, by filling it up; the metaphor is persisted in, of preparing and clearing the way, for the coming of the Messiah, done by the ministry of John; under which, such souls as were lowly and humble, and depressed with the sense of sin, should be raised and directed to believe in Christ, and be filled with divine consolation from him. These words are owned by the Jews {o} to belong to the world to come; that is, the times of the Messiah; though they understand them, of making way for the return of the Israelites from captivity, by the Messiah: just as they suppose such things were done by the miraculous cloud, for the children of Israel, as they passed through the wilderness; of which they say {p},

"that it went before them, smote the serpents and scorpions, and fiery serpents, and the rock; and if there was any low place, it raised it up; or high place, it made it low, and caused them to be plain; as it is said,

Isaiah 40:3 "And every valley shall be exalted", &c.''

But what they say of this cloud literally, as preparing the way for the Israelites, is in a spiritual sense true, of the ministry of John; whereby many of the children of Israel, had the way prepared for them, for the reception of the Messiah; when as every humble soul had its expectation raised, and its faith encouraged, and its heart filled with spiritual joy; so such as were proud and haughty, were humbled:

and every mountain and hill shall be brought low; all such as are elated with their own abilities, and boast of their righteousness, trust in themselves, and look with disdain and contempt on others, their loftiness shall be bowed down, and their haughtiness made low; and the Messiah alone, in his person, grace, and righteousness, be exalted:

and the crooked shall be made straight: such as are of a crooked spirit, and walk in crooked ways, with the workers of iniquity, shall have new spirits given them, and be directed to right ways, and be led in the paths of righteousness and truth:

and the rough ways shall be made smooth; and men of rough tempers, comparable to lions and bears, shall become quiet and peaceable, smooth and easy; and moreover, whatever difficulties were in the minds of men concerning the Messiah, the end of his coming, and the nature of his kingdom; and whatever impediments were in the way of embracing him when come, should now be removed at least from many persons: R. David Kimchi, a very noted Jewish commentator {q}, acknowledges that the whole of this passage is to be understood, lvm Krd, "by way of parable", in a mystical and figurative sense.

{o} T. Hieros. Erubin, fol. 25. 2.
{p} Bemidbar Rabba, sect. 1. fol. 177. 1, 2. Vid. Targ. in Cant. ii. 6. & Jarchi in Cant. iii. 6.
{q} In Isa. xl. 4.