He hath afflicted my strength in the way Some improperly restrict this complaint to the time when the Jews were subjected to much annoyance after the liberty granted them to return to their own land. We are rather to understand the word journey or way in a metaphorical sense. As the manifestation of Christ was the goal of the race which God's ancient people were running, they justly complain that they are afflicted and weakened in the midst of their course. [1] Thus they set before God his promise, telling him, that although they had not run at random, but had confided in his protection, they were nevertheless broken and crushed by his hand in the midst of their journey. They do not indeed find fault with him, as if he had disappointed their hope; but fully persuaded, that he does not deal deceitfully with those who serve him, by this complaint they strengthen themselves in the hope of a favorable issue. In the same sense they add, that their days were shortened, because they directed their view to the fullness of time, which did not arrive till Christ was revealed. [2] It accordingly follows, -- (verse 24,) Cut me not off in the midst of my days. They compare the intervening period until Christ should appear to the middle of life; for, as has been already observed, the Church only attained to her perfect age at his coming. This calamity, no doubt, had been foretold, but the nature of the covenant which God had entered into with his ancient people required that he should take them under his protection, and defend them. The captivity, therefore, was as it were a violent rupture, on which account the godly prayed with the greater confidence, that they might not be prematurely taken away in the midst of their journey. By speaking in this manner, they did not fix for themselves a certain term of life; but as God, in freely adopting them, had given them the commencement of life, with the assurance that he would maintain them even to the advent of Christ, they might warrantably bring forward and plead this promise. Lord, as if they had said, thou hast promised us life, not for a few days, or for a month or for a few years, but until thou shouldst renew the whole world, and gather together all nations under the dominion of thine Anointed One. What then does the prophet mean when he prays, Let us not perish in the midst of our course? [3] The reason stated in the clause immediately following, Thy years are from generation to generation, seems to be quite inapplicable in the present case. Because God is everlasting, does it therefore follow that men will be everlasting too? But on Psalm 90:2, we haveshown how we may with propriety bring forward his eternity, as a ground of confidence in reference to our salvation; for he desires to be known as eternal, not only in his mysterious and incomprehensible essence, but also in his word, according to the declaration of the Prophet Isaiah, "All flesh is grass, and all the goodliness thereof is as the flower of the field; but the word of our God shall stand for ever." Isaiah 40:6-8 Now since God links us to himself by means of his word, however great the distance of our frail condition from his heavenly glory, our faith should nevertheless penetrate to that blessed state from which he looks down upon our miseries. Although the comparison between his eternal existence and the brief duration of human life is introduced also for another purpose, yet when he sees that men pass away as it were in a moment, and speedily evanish, it moves him to compassion, as shall presently be declared at greater length.

Footnotes

1 - Way or journey is a term often used in Scripture to denote the course of a man's life; and here the Psalmist speaks, as other sacred writers not unfrequently do, of the whole Jewish nation as if it were one man, and of its continuance, which was to be until the coming of Christ, as if the life of one man. It was now, so to speak, only in its meridian. An attention to this remark will assist the reader in understanding Calvin's exposition of the passage.

2 - Consequently, the ruin and desolation to which they seemed given up by the Babylonish captivity, was like the cutting off or shortening of their days.

3 - "Possibly the Psalmist (whom some learned interpreters suppose to be Daniel) may have respect to that prophecy, Daniel 9:24, 25, which probably was published before this time; for this time was almost precisely the midst of the days between the building of the material temple by Solomon, and the building of the spiritual temple, or the Church, by the Messias; there being about a thousand years distance between these two periods, whereof seventy prophetical weeks, or four hundred and ninety years, were yet to come. And so he prays that God would not root them out of this Babylonish captivity, but would graciously restore them to their own land, and preserve them as a Church and nation there, until the coming of the Messias." -- Poole's Annotations.

He weakened my strength in the way - Margin, as in Hebrew, "afflicted." The idea is, that God had taken his strength away; he had weakened him - humbled him - brought him low by sorrow. The word "way" refers to the course which he was pursuing. In his journey of life God had thus afflicted - humbled - prostrated him. The psalmist here turns from the exulting view which he had of the future Psalm 102:21-22, and resumes his complaint - the remembrance of his troubles and sorrows Psalm 102:3-11. He speaks, doubtless, in the name of his people, and describes troubles which were common to them all. Perhaps the allusion to his troubles here may be designed, as such a recollection should do, to heighten his sense of the goodness and mercy of God in the anticipated blessings of the future.
He shortened my days - Compare Job 21:21; Psalm 89:45. That is, He seemed to be about to cut me off from life, and to bring me to the grave. The psalmist felt so confident that he would die - that he could not endure these troubles, but must sink under them, that he spoke as if it were already done. Compare Psalm 6:4-5.

He weakened my strength in the way - We are brought so low in our captivity by oppression, by every species of hard usage, and by death, that there is now no hope of our restoration by any efforts of our own.

He (q) weakened my strength in the way; he shortened my days.
(q) The church lament that they see not the time of Christ, which was promised, but have but few years and short days.

He weakened my strength in the way,.... The psalmist here returns to his complaint of his afflictions, weakness, and frailty, which ended Psalm 102:11, after which some hints are given of the latter day glory, which though he despaired of seeing, by reason of his frailty and mortality, yet comforts himself with the eternity and immutability of Christ, and that there would be a succession of the church, a seed of true believers, who would see and enjoy it: as for himself, he says that God (for he is that "He", and not the enemy, as some) had "weakened" his "strength in the way", by afflictions, as the word (e) signifies; which weakens the strength and vigour of the mind, and discourages and dispirits it, and enfeebles the body: many are the afflictions which the people of God meet with in the course of their life, in their way to heaven, which have such an effect upon them; through many tribulations they pass to enter the kingdom, as the Israelites in their way to Canaan, and Christ to glory: some think the psalmist represents the Jews in their return from the Babylonish captivity, meeting with difficulties and discouragements in the way; rather the church of God, in the expectation of the Messiah, who, because his coming was delayed, grew feeble in their faith and hope, had weak hands and feeble knees, which needed strengthening by fresh promises: though it may be, best of all, the people of God, waiting for latter day glory, enfeebled by the persecutions of antichrist, or grown weak in the exercises of their grace, faith, hope, and love; which will be their case before these glorious times, and now is, see Revelation 3:2,
he shortened my days; which he thought he should live, and expected he would; and which, according to the course of nature, and the common term of man's life, he might, in all human appearance, have lived; otherwise, with respect to the decree of God, which has fixed the bounds of man's days, they cannot be shorter or longer than they are, Job 14:5.
(e) "afflixit", Pagninus, Montanus, Tigurine version, Musculus, Piscator, Gejerus, Schmidt; so Ainsworth.

Bodily distempers soon weaken our strength, then what can we expect but that our months should be cut off in the midst; and what should we do but provide accordingly? We must own God's hand in it; and must reconcile this to his love, for often those that have used their strength well, have it weakened; and those who, as we think, can very ill be spared, have their days shortened. It is very comfortable, in reference to all the changes and dangers of the church, to remember that Jesus Christ is the same yesterday, to-day, and for ever. And in reference to the death of our bodies, and the removal of friends, to remember that God is an everlasting God. Do not let us overlook the assurance this psalm contains of a happy end to all the believer's trials. Though all things are changing, dying, perishing, like a vesture folding up and hastening to decay, yet Jesus lives, and thus all is secure, for he hath said, Because I live ye shall live also.

The writer, speaking for the Church, finds encouragement in the midst of all his distresses. God's eternal existence is a pledge of faithfulness to His promises.
in the way--of providence.
weakened--literally, "afflicted," and made fearful of a premature end, a figure of the apprehensions of the Church, lest God might not perform His promise, drawn from those of a person in view of the dangers of early death (compare Psalm 89:47). Paul (Hebrews 1:10) quotes Psalm 102:26-28 as addressed to Christ in His divine nature. The scope of the Psalm, as already seen, so far from opposing, favors this view, especially by the sentiments of Psalm 102:12-15 (compare Isaiah 60:1). The association of the Messiah with a day of future glory to the Church was very intimate in the minds of Old Testament writers; and with correct views of His nature it is very consistent that He should be addressed as the Lord and Head of His Church, who would bring about that glorious future on which they ever dwelt with fond delightful anticipations.

On the way (ב as in Psalm 110:7) - not "by means of the way" (ב as in Psalm 105:18), in connection with which one would expect of find some attributive minuter definition of the way - God hath bowed down his strength (cf. Deuteronomy 8:2); it was therefore a troublous, toilsome way which he has been led, together with his people. He has shortened his days, so that he only drags on wearily, and has only a short distance still before him before he is entirely overcome. The Chethb כחו (lxx ἰσχύος αὐτοῦ) may be understood of God's irresistible might, as in Job 23:6; Job 30:18, but in connection with it the designation of the object is felt to be wanting. The introductory אמר (cf. Job 10:2), which announces a definite moulding of the utterance, serves to give prominence to the petition that follows. In the expression אל־תּעלני life is conceived of as a line the length of which accords with nature; to die before one's time is a being taken up out of this course, so that the second half of the line is not lived through (Ps 55:24, Isaiah 38:10). The prayer not to sweep him away before his time, the poet supports not by the eternity of God in itself, but by the work of the rejuvenation of the world and of the restoration of Israel that is to be looked for, which He can and will bring to an accomplishment, because He is the ever-living One. The longing to see this new time is the final ground of the poet's prayer for the prolonging of his life. The confession of God the Creator in Psalm 102:26 reminds one in its form of Isaiah 48:13, cf. Psalm 44:24. המּה in Psalm 102:27 refers to the two great divisions of the universe. The fact that God will create heaven and earth anew is a revelation that is indicated even in Isaiah 34:4, but is first of all expressed more fully and in many ways in the second part of the Book of Isaiah, viz., Isaiah 51:6, Isaiah 51:16; Isaiah 65:17; Isaiah 66:22. It is clear from the agreement in the figure of the garment (Isaiah 51:6, cf. Psalm 50:9) and in the expression (עמד, perstare, as in Isaiah 66:22) that the poet has gained this knowledge from the prophet. The expressive אתּה הוּא, Thou art He, i.e., unalterably the same One, is also taken from the mouth of the prophet, Isaiah 41:4; Isaiah 43:10; Isaiah 46:4; Isaiah 48:12; הוּא is a predicate, and denotes the identity (sameness) of Jahve (Hofmann, Schriftbeweis, i. 63). In v. 29 also, in which the prayer for a lengthening of life tapers off to a point, we hear Isaiah 65:2; Isaiah 66:22 re-echoed. And from the fact that in the mind of the poet as of the prophet the post-exilic Jerusalem and the final new Jerusalem upon the new earth under a new heaven blend together, it is evident that not merely in the time of Hezekiah or of Manasseh (assuming that Isaiah 40:1 are by the old Isaiah), but also even in the second half of the Exile, such a perspectively foreshortened view was possible. When, moreover, the writer of the Epistle to the Hebrews at once refers Psalm 102:26-28 to Christ, this is justified by the fact that the God whom the poet confesses as the unchangeable One is Jahve who is to come.

He - God. The way - In the midst of the course of our lives. Some think the psalmist here speaks of the whole commonwealth as of one man, and of its continuance, as of the life of one man.