Some translations set each line of poetry farther to the right than the rest of the text to make it easier to read. The ULB does this with the poetry in this chapter.
This chapter prophesies concerning a future time of peace and restoration. It is unlikely to have been fulfilled in Isaiah's day. (See: [[rc://en/tw/dict/bible/kt/restore]], [[rc://en/tw/dict/bible/kt/prophet]] and [[rc://en/tw/dict/bible/kt/fulfill]])