The course of God's intervention for Israel is described in vv. 19, 20. His looking down from heaven is equivalent to His observance, as the all-seeing Witness and Judge (compare Psalms xiv. 2, xxxiii. 13, 14, etc.), and is preparatory to His hearing the sighing of the captive Israel, doomed to death. The language of ver. 20 is apparently drawn from Psalm lxxix. 11. The thought corresponds to that of ver. 17. The purpose of His intervention is set forth in vv. 21, 22, as being the declaration of Jehovah's name and praise in Jerusalem before a gathered world. The aim of Jehovah's dealings is that all men, through all generations, may know and praise Him. That is but another way of saying that He infinitely desires, and perpetually works for, men's highest good. For our sakes, He desires so much that we should know Him, since the knowledge is life eternal. He is not greedy of adulation nor dependent on recognition, but He loves men too well not to rejoice in being understood and loved by them, since Love ever hungers for return. The psalmist saw what shall one day be, when, far down the ages, he beheld the world gathered in the temple-courts, and heard the shout of their praise borne to him up the stream of time. He penetrated to the inmost meaning of the Divine acts, when he proclaimed that they were all done for the manifestation of the Name, which cannot but be praised when it is known. If the poet was one of the exiles, on whom the burden of the general calamity weighed as a personal sorrow, it is very natural that his glowing anticipations of national restoration should be, as in this psalm, enclosed in a setting of more individual complaint and petition. The transition from these to the purely impersonal centre of the psalm, and the recurrence to them in vv. 23-28, are inexplicable, if the "I" of the first and last parts is Israel, but perfectly intelligible if it is one Israelite. For a moment the tone of sadness is heard in ver. 23; but the thought of his own afflicted and brief life is but a stimulus to the psalmist to lay hold of God's immutability and to find rest there. The Hebrew text reads "_His_ strength," and is followed by the LXX., Vulgate, Hengstenberg, and Kay ("He afflicted on the way with His power"); but the reading of the Hebrew margin, adopted above and by most commentators, is preferable, as supplying an object for the verb, which is lacking in the former reading, and as corresponding to "_my_ days" in _b_.