17 And I will wait for Jehovah, that hideth his face from the house of Jacob, and I will look for him. 18 Behold, I and the children whom Jehovah hath given me are for signs and for wonders in Israel from Jehovah of hosts, who dwelleth in mount Zion. 19 And when they shall say unto you, Seek unto them that have familiar spirits and unto the wizards, that chirp and that mutter: should not a people seek unto their God? on behalf of the living [should they seek] unto the dead? 20 To the law and to the testimony! if they speak not according to this word, surely there is no morning for them. 21 And they shall pass through it, sore distressed and hungry; and it shall come to pass that, when they shall be hungry, they shall fret themselves, and curse by their king and by their God, and turn their faces upward: 22 and they shall look unto the earth, and behold, distress and darkness, the gloom of anguish; and into thick darkness [they shall be] driven away.

Matthew Henry's Commentary on Isaiah 8:17-22

Commentary on Isaiah 8:17-22

(Read Isaiah 8:17-22)

The prophet foresaw that the Lord would hide his face; but he would look for his return in favour to them again. Though not miraculous signs, the children's names were memorials from God, suited to excite attention. The unbelieving Jews were prone to seek counsel in difficulties, from diviners of different descriptions, whose foolish and sinful ceremonies are alluded to. Would we know how we may seek to our God, and come to the knowledge of his mind? To the law and to the testimony; for there you will see what is good, and what the Lord requires. We must speak of the things of God in the words which the Holy Ghost teaches, and be ruled by them. To those that seek to familiar spirits, and regard not God's law and testimony, there shall be horror and misery. Those that go away from God, go out of the way of all good; for fretfulness is a sin that is its own punishment. They shall despair, and see no way of relief, when they curse God. And their fears will represent every thing as frightful. Those that shut their eyes against the light of God's word, will justly be left to darkness. All the miseries that ever were felt or witnessed on earth, are as nothing, compared with what will overwhelm those who leave the words of Christ, to follow delusions.