And I will wait upon the LORD, that hideth his face from the house of Jacob, and I will look for him.
And - i:e., Accordingly. This is the believing response of Isaiah to the encouragement of God to His disciples to "sanctify" Him, even though most of the nation were about to "stumble" in respect to the promised deliverance implied in "Immanuel." I - whatever the rest of the nation may do.
Will wait upon the Lord - I will look to Yahweh alone. This is put into Messiah's mouth, Hebrews 2:13, "I will put my trust in Him." For He is the antitype to the believing Israel, of whom Isaiah is the mouth-piece here (Isaiah 49:3; Isaiah 49:6).
That hideth his face - though He seems now to withdraw His countenance from Judah (the then representative of "the house of Jacob"). Let us wait and trust in, though we cannot see Him (Isaiah 50:10; Isaiah 54:8; Habakkuk 2:3; Luke 2:25; Luke 2:38).