(20) To the law and to the testimony.--The words are only remotely and by analogy an exhortation to the study of Scripture in general, or even to that of the Law of Moses in particular. "The law and the testimony" are obviously here, as in Isaiah 8:16, the "word of Jehovah," spoken to the prophet himself, the revelation which had come to him with such an intensity of power.

If they speak not according to this word . . .--The personal pronoun refers to the people of Isaiah 8:19 who were hunting after soothsayers. The second clause should be rendered, for them there is no light of morning. The light here is that of hope rather than of knowledge. No morning dawn should shine on those who haunted the caves and darkened rooms of the diviners, the seances of the spiritualists of Jerusalem. The verse admits, however, of a different construction. As the Hebrew idiom, "If they shall . . ." stands, as in Psalm 95:11; Hebrews 4:3; Hebrews 4:5, for the strongest form of negative prediction, so "if they shall not . . ." may stand here for the strongest form of positive. So taken the verse would read, Surely they will speak according to this word. (i.e., will have recourse to the true Revelation) when there is no morning-dawn for them, when they look above and around, and see nothing but darkness.

Verse 20. - To the Law and to the testimony. A sort of watchword or battle-cry, to be used by the faithful when God's enemies assailed them. Compare Gideon's cry (Judges 7:18), "For the Lord and for Gideon." If they speak not according to this word, it is because there is no light in them; rather, Surely they will speak according to this word, when there is no dawn for them; i.e. when they are plunged in darkness (ver. 22) and distress, and see no prospect of better days, surely they - the people generally - will rally to this cry, and repeat it, "For the Law and for the testimony." They will not always trust in necromancy.

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.To the law, and to the testimony,.... Kimchi takes this to be an oath, "by the law, and by the testimony", it is so and so; but Aben Ezra observes there is no instance of this kind in Scripture; it is a direction of Christ's to his disciples, to attend to the writings of Moses and the prophets, to search the Scriptures, as in John 5:39 and particularly what is before said in this prophecy concerning himself, the same is meant as on Isaiah 8:16.

if they speak not according to this word; this sure word of prophecy, to which men do well to take heed, as to a light shining in a dark place, it being the rule of faith and practice, a lamp to the feet, and a light to the path:

it is because there is no light in them; that is, in them that speak not according to it, meaning the Scribes and Pharisees; who, rejecting the written word, set up the traditions of the elders above it, and taught the people to walk according to them; and so were, as our Lord says, "blind leaders of the blind", Matthew 15:14 or the words may be read, "if not"; if they will not regard the Scriptures, and the evangelical doctrine in them, and the testimony they give concerning Christ; "let them speak according to this word"; or instruction, and counsel, they have from the Scribes and Pharisees: "in which there is no light" (b); but the darkness of ignorance, infidelity, superstition, and will worship; or "no morning"; but a night of Jewish darkness, even though the sun of righteousness was risen, and the dayspring from on high had visited the earth; yet they had received no light and knowledge from him, which was their condemnation, John 1:4, John 3:19 or thus, "to the law, and to the testimony, though they may say after this manner, there is no light in it" (c); in the law and testimony, preferring the traditions, decisions, and determinations of their doctors above it. Noldhius (d) renders the words thus, "seeing they speak not according to this word, certainly they shall have no morning"; that is, seeing the seducers and false teachers, in the preceding verse Isaiah 8:19, speak not according to the word of God, and testimony of Jesus, they shall have no morning of light and joy, of grace and comfort, or any spiritual felicity; Christ will be no morning to them, but they will continue in their dark, benighted, and miserable condition, described in the following verse.

(b) "sin minus, dicant secundum verbum istud, cui mon est aurora", Piscator. So Sanctius. (c) "Licet ipsi dicent, in verbis legis, nihil lucis esse", Oleaster in Bootius. (d) Ebr. Part. Concord. p. 374. No. 1302.