¹ tn Heb “tie up [the] testimony.” The “testimony” probably refers to the prophetic messages God has given him. When the prophecies are fulfilled, he will be able to produce this official, written record to confirm the authenticity of his ministry and to prove to the people that God is sovereign over events.

² tn Heb “seal [the] instruction among my followers.” The “instruction” probably refers to the prophet’s exhortations and warnings. When the people are judged for the sins, the prophet can produce these earlier messages and essentially say, “I told you so.” In this way he can authenticate his ministry and impress upon the people the reality of God’s authority over them.

³ tn Heb “to [the] instruction and to [the] testimony.” The words “then you must recall” are supplied in the translation for stylistic reasons. In the Hebrew text vv. 19-20a are one long sentence, reading literally, “When they say to you…, to the instruction and to the testimony.” On the identity of the “instruction” and “testimony” see the notes at v. 16.

⁴ tn Heb “If they do not speak according to this word, [it is] because it has no light of dawn.” The literal translation suggests that “this word” refers to the instruction/testimony. However, it is likely that אִם־לֹא (’im-lo’) is asseverative here, as in 5:9. In this case “this word” refers to the quotation recorded in v. 19. For a discussion of the problem see J. N. Oswalt, Isaiah (NICOT), 230, n. 9. The singular pronoun in the second half of the verse is collective, referring back to the nation (see v. 19b).