C. F. Keil and Franz Delitzsch on Isaiah 40:27

Isa 40:27

Such of the Israelites are required first of all to be brought to a consciousness of the folly of idolatry are not called Israel at all, because they place themselves on a part with the gōyı̄m. But now the prophet addresses those of little faith, who nevertheless desire salvation; those who are cast down, but not in utter despair. “Why sayest thou, O Jacob, and speakest, O Israel, My way is hidden from Jehovah, and my right is overlooked by my God?” The name Jacob stands here at the head, as in Isa 29:22, as being the more exquisite name, and the one which more immediately recalled their patriarchal ancestor. They fancied that Jehovah had completely turned away from them in wrath and weariness. “My way” refers to their thorny way of life; “my right” (mishpâtı̄) to their good right, in opposition to their oppressors. Of all this He appeared to take no notice at all. He seemed to have no thought of vindicating it judicially (on the double min, away from him, see Ges. §154, 3,c).