Isaiah 1 is the first chapter of the Book of Isaiah, one of the Book of the Prophets in the Hebrew Bible, which is the Old Testament of the Christian Bible. In this "vision of Isaiah concerning Judah and Jerusalem", the prophet calls the nation to repentance and predicts the destruction of the first temple in the siege of Jerusalem. This chapter provides an introduction to the issues of sin, judgement, and hoped-for restoration which form the overarching structure of the whole book. It concludes (verse 31) with 'a reference to the burning of those who trust in their own strength', in a fire which cannot be 'quenched' (Heb. root: k-b-h), a relatively rare word which is also used in the last verse of the book (verse 66:24: 'their fire shall not be quenched'), thereby linking together beginni