¹ tn Heb “if you do not believe, you will not endure.” The verb forms are second plural; the Lord here addresses the entire Davidic family and court. (Verse 4 was addressed to the king.) There is a wordplay in the Hebrew text, designed to draw attention to the alternatives set before the king (cf. 1:20). “Believe” (תַאֳמִינוּ, ta’aminu) is a Hiphil form of the verb אָמָן (’aman); “endure” (תֵאָמֵנוּ, te’amenu) is a Niphal form of this same verb.

² tn Heb “and he said.” The subject is unexpressed, but the reference to “my God” at the end of the verse indicates the prophet is speaking.

³ tn The verb is second plural in form, because the prophet addresses the whole family of David. He continues to use the plural in v. 14 (with one exception, see the notes on that verse), but then switches back to the second singular (addressing Ahaz specifically) in vv. 16-17.

⁴ tn Heb “house.” See the note at v. 2.

⁵ sn The address to the “house of David” is designed to remind Ahaz and his royal court of the protection promised to them through the Davidic covenant. The king’s refusal to claim God’s promise magnifies his lack of faith.