Some translations prefer to set apart extended quotations, prayers or songs. The ULB and many other English translations indent the lines of 1:2-16, which is an extended quotation. The lines 1:7, 17-18 are indented again to further set them apart from the rest of the quote.
In this chapter, it is unclear whether these prophecies concern the fall of Jerusalem, the coming of the Messiah or the day of the Lord. It is possible that the prophecies reference more than one period of time. (See: [[rc://en/tw/dict/bible/kt/prophet]], [[rc://en/tw/dict/bible/kt/christ]] and [[rc://en/tw/dict/bible/kt/dayofthelord]])