He shall cause, &c. This verse is not an "addendum". or "irrelevant", or "an illegible gap". It is necessary in order to give us the subject of the song, which is reserved till this verse. The symbol is to tell us that Israel is the vineyard (Compare Isaiah 27:12). See the Structure on the previous page; and note that in (Isaiah 26:1-21) we have the Song of Judah, while in (Isaiah 27:2-6) the song concerning Israel.
the world. the inhabited world. Hebrew. tebel.