we have the road to Jerusalem pictured in vv. 9_b_-13, immediately upon the back of the Servant's call to go forth in ver. 9_a_. We have then the assurance of Zion being rebuilt and thronged by her children in vv. 14-23, and another affirmation of the certainty of redemption in vv. 24-26; In l. 1-3 this is repeated. In li.-lii. 12 the petty people is assured that it shall grow innumerable again; new affirmations are made of its ransom and return, ending with the beautiful prospect of the feet of the heralds of deliverance on the mountains of Judah (lii. 7_b_) and a renewed call to leave Babylon (vv. 11, 12). We shall treat all these passages in our Twenty-First Chapter. And as they started naturally from the Servant's work in xlix. 1-9_a_ and his example in l. 4-11, so upon his final and crowning work in ch. liii. there follow as naturally ch. liv. (the prospect of _the seed_ that liii. 10 promised he should see), and ch. lv. (a new call to come forth). These two, with the little pre-exilic prophecy, ch. lvi. 1-8, we shall treat in our Twenty-Second Chapter. Then come the series of difficult small prophecies with pre-exilic traces in them, from lvi. 9-lix. They will occupy our Twenty-Third Chapter. In ch. lx. Zion is at last not only in sight, but radiant in the rising of her new day of glory. In chs. lxi. and lxii. the prophet, having reached Zion, "looks back," as Dillmann well remarks, "upon what has become his task, and in connection with that makes clear once more the high goal of all his working and striving." In lxiii. 1-6 the Divine Deliverer is hailed. We shall take lx.-lxiii. 6 together in our Twenty-Fourth Chapter. Ch. lxiii. 7-lxiv. is an Intercessory Prayer for the restoration of _all_ Israel. It is answered in ch. lxv., and the lesson of this answer, that Israel must be judged, and that all cannot be saved, is enforced in ch. lxvi. Chs. lxiii. 7-lxvi. will therefore form our Twenty-Fifth and closing Chapter. Thus our course is clear, and we can overtake it rapidly. It is, to a large extent, a series of spectacles, interrupted by exhortations upon duty; things, in fact, to see and to hear, not to argue about. There are few great doctrinal questions, except what we have already sufficiently discussed; our study, for instance, of the term righteousness, we shall find has covered for us a large part of the ground in advance. And the only difficult literary question is that of the pre-exilic and post-exilic pieces, which are alleged to form so large a part of chs. lvi.-lix. and lxiii.-lxvi. CHAPTER XXI. _DOUBTS IN THE WAY._ ISAIAH xlix.-lii. 12.