Verses 7-10. - In the central portion of the psalm, from ver. 7 to ver. 28, God is praised for his doings in connection with the history of Israel; and, first of all, in the present passage, for his doings at Sinai and in the wilderness. Verse 7. - O God, when thou wentest forth before thy people (see Exodus 13:20-22). The present verse and the next are an echo of the Song of Deborah (Judges 5:4, 5), "Lord, when thou wentest out of Seir, when thou marchedst out of the field of Edom, the earth trembled, and the heavens dropped, the clouds also dropped water; the mountains melted from before the Lord, even that Sinai from before the Lord God of Israel." When thou didst march through the wilderness. The entire march from Etham to Pisgah is in the poet's mind; but he can touch only certain features of it. And first, the scene at Sinai.

68:7-14 Fresh mercies should put us in mind of former mercies. If God bring his people into a wilderness, he will be sure to go before them in it, and to bring them out of it. He provided for them, both in the wilderness and in Canaan. The daily manna seems here meant. And it looks to the spiritual provision for God's Israel. The Spirit of grace and the gospel of grace are the plentiful rain, with which God confirms his inheritance, and from which their fruit is found. Christ shall come as showers that water the earth. The account of Israel's victories is to be applied to the victories over death and hell, by the exalted Redeemer, for those that are his. Israel in Egypt among the kilns appeared wretched, but possessed of Canaan, during the reigns of David and Solomon, appeared glorious. Thus the slaves of Satan, when converted to Christ, when justified and sanctified by him, look honourable. When they reach heaven, all remains of their sinful state disappear, they shall be as the wings of the dove, covered with silver, and her feathers as gold. Full salvation will render those white as snow, who were vile and loathsome through the guilt and defilement of sin.O God, when thou wentest forth before thy people,.... In the pillar of cloud, and in the pillar of fire, as the Targum adds; and this divine Person was the Son of God, the Angel of his presence, in whom his name was, even his name JAH or Jehovah before mentioned;

when thou didst march through the wilderness; at the head of the Israelites, leading, guiding, and directing them; providing for them all things necessary, and protecting them against their enemies. And so Christ goes before his people, as they pass through the wilderness of this world; and does the like good offices for them, until he, as the great Captain of their salvation, brings them safe to glory: for what is here said is taken notice of as a resemblance of what he now does, or has done, under the Gospel dispensation, to which this psalm belongs; particularly of his marching through the wilderness of the Gentile world, in the ministry of the word by his apostles, wherein he went forth conquering and to conquer.

Selah; on this word; see Gill on Psalm 3:2.