Isaiah 40:5

The cry of the crier proceeds thus in Isa 40:5 : "And the glory of Jehovah will be revealed, and all flesh seeth together: for the mouth of Jehovah hath spoken it." The pret. cons. קנגלה is here apodosis imper. When the way is prepared for Jehovah the Coming One, the glory of the God of salvation will unveil itself (on the name Jehovah, which is applied to God, the absolute I, as living and revealing Himself in history, more especially in the history of salvation). His parousia is the revelation of His glory (Pe1 4:13). This revelation is made for the good of Israel, but not secretly or exclusively; for all the human race, called here designedly "all flesh" (kol bâsâr), will come to see it (compare Luk 3:6, "the salvation of God"). Man, because he is flesh, cannot see God without dying (Exo 33:20); but the future will fill up this gulf of separation. The object to the verb "see" is not what follows, as Rosenmller supposes, viz., "that the mouth of Jehovah hath spoken," for the word of promise which is here fulfilled is not one addressed to all flesh; nor does it mean, "see that Jehovah hath spoken with His own mouth," i.e., after having become man, as Stier maintains, for the verb required in this case would be מדבּר, not דּבּר. The clause, "for the mouth of Jehovah hath spoken it," is rather Isaiah's usual confirmation of the foregoing prophecy. Here the crier uses it to establish the certainty of what he foretells, provided that Israel will do what he summons it to perform.

40:5 The future revelation of God’s glory would include the return of Judah from exile but would also go beyond it. The New Testament confirmed that the revelation of God’s glory came in Jesus Christ (John 1:14; Heb 1:3). • The Lord has spoken: The coming salvation and judgment would certainly occur because the Lord, who keeps his word, had declared it (see Isa 1:20; 58:14).