Isaiah 40:4

4 Every valley is raised up, And every mountain and hill become low, And the crooked place hath become a plain, And the entangled places a valley.

Isaiah 40:4 Meaning and Commentary

Isaiah 40:4

Every valley shall be exalted, and every mountain and hill
shall be made low
Which is not to be understood literally, but, as Kimchi says, parabolically and mystically: the meaning is, that in consequence of John's ministry, and our Lord's coming, such who were depressed and bowed down with the guilt of sin, and were low and humble in their own eyes, should be raised up and comforted; and that such who were elated with themselves, and their own righteousness, should be humbled; their pride and haughtiness should be brought down, and they treated with neglect and contempt, while great notice was taken of lowly minded ones; see ( Luke 14:11 ) and ( Luke 18:14 ) : and the crooked shall be straight and the rough places plain;
what before was dark and intricate in prophecy should now become clear; and such doctrines as were not so well understood should now become plain and easy.

Isaiah 40:4 In-Context

2 Speak to the heart of Jerusalem, and call to her, That her warfare hath been completed, That accepted hath been her punishment, That she hath received from the hand of Jehovah Double for all her sins.
3 A voice is crying -- in a wilderness -- Prepare ye the way of Jehovah, Make straight in a desert a highway to our God.
4 Every valley is raised up, And every mountain and hill become low, And the crooked place hath become a plain, And the entangled places a valley.
5 And revealed hath been the honour of Jehovah, And seen [it] have all flesh together, For the mouth of Jehovah hath spoken.
6 A voice is saying, `Call,' And he said, `What do I call?' All flesh [is] grass, and all its goodliness [is] As a flower of the field:
Young's Literal Translation is in the public domain.