Every valley shall be exalted, and every mountain and hill shall be made low: and the crooked shall be made straight, and the rough places smooth:
All Commentaries on Isaiah 40:4 Go To Isaiah 40
Aquinas Study Bible
AD 2017
The true consolation, the genuine comfort and the real deliverance from the iniquities of men is the incarnation of our God and Savior. Now the first who acted as herald of this event was the inspired John the Baptist. Accordingly, the prophetic text proclaims the realities that relate to him in advance: for that is what the three blessed Gospel writers have taught us and that the most divine Mark has even made the prologue of his work. (Theodoret of Cyrus) Orderly is the arrangement of the teachings of God; in Isaiah: make right his path. [Is. 40:3] Crooked is deviance from the teachings of God; in Isaiah: and they were crooked in order and rough in the level ways. [Is. 40:4] Obedience to the teachings of God is smooth; in Isaiah: the same as above. Disobedience is, in contrast, harsh and bristly; in Isaiah: the same as above. (Eucharius of Lyons Formulae Bk 8)
