Isa 29:1-24. Coming invasion of Jerusalem: Its failure: Unbelief of the Jews.
This chapter opens the series of prophecies as to the invasion of Judea under Sennacherib, and its deliverance.
Ariel - Jerusalem; Ariel means “Lion of God,” that is, city rendered by God invincible: the lion is emblem of a mighty hero (2Sa 23:20). Otherwise “Hearth of God,” that is, place where the altar-fire continually burns to God (Isa 31:9; Eze 43:15, Eze 43:16).
add ... year to year - ironically; suffer one year after another to glide on in the round of formal, heartless “sacrifices.” Rather, “add yet another year” to the one just closed [Maurer]. Let a year elapse and a little more (Isa 32:10, Margin).
let ... kill sacrifices - rather, “let the beasts (of another year) go round” [Maurer]; that is, after the completion of a year “I will distress Ariel.”