84. How many are the days of thy servant? etc. Some read these two clauses apart, as if the first were a general complaint of the brevity of human life, such as is to be met with in other psalms, and more frequently in the book of Job; and next, in their opinion, there follows a special prayer of the Psalmist, that God would take vengeance upon his enemies. But I rather prefer joining the two clauses together, and limit both to David’s afflictions; as if it had been said, Lord, how long hast thou determined to abandon thy servant to the will of the ungodly? when wilt thou set thyself in opposition to their cruelty and outrage, in order to take vengeance upon them? The Scriptures often use the word days in this sense; as, for example, “the days of Egypt,” Ezekiel 30:9; “the days of Babylon,” and “the days of Jerusalem,” Psalms 137:7; a word which, in other places, is called “ the day of visitation,” Isaiah 10:3. By the use of the plural number, is denoted a certain determinate portion of time, which, in other places, is compared to the “days of an hireling,” Job 14:6; Isaiah 16:14. The Psalmist does not, then, bewail in general the transitory life of man, but he complains that the time of his state of warfare in this world had been too long protracted; and, therefore, he naturally desires that it might be brought to a termination. In expostulating with God about his trouble, he does not do so obstinately, or with a murmuring spirit; but still, in asking how long it will be necessary for him to suffer, he humbly prays that God would not delay to succor him. As to the point of his stirring him up by prayer to execute vengeance, we have elsewhere seen in what sense it was lawful for him to make such a request; namely, because the vengeance which he desired to see was such as is properly suitable to God. It is certain that he had divested himself of all the corrupt affections of the flesh, that he might, with a pure and undisturbed zeal, desire God’s judgment. He, however, in this passage, only wishes in general to be delivered by the hand of God from the wrongs which were inflicted upon him, without adjudging to perdition his adversaries; for he was quite contented, provided God appeared to defend him.