Cf. Is. xli. 4, xliv. 6, xlviii. 12 (LXX.). If the whole passage is intended to be a quotation, it is not made exactly from any one of these; the opening words are from the second passage referred to; and perhaps this is the only portion intended to be a quotation, the second clause being explanatory; the words of the second clause are varied in the repetition immediately afterwards.