He spread a cloud for their protection, and fire to give them light in the night.

He hath spread a cloud for a covering, And fire to enlighten the night.

A cloud was stretched over them for a cover; and he sent fire to give light in the night.

He spread a cloud for a screen; And fire to give light in the night.

He spread out a cloud for a covering The Psalmist enumerates certain miracles by which God continued his grace towards his people in the wilderness. This order is worthy of notice; for it was no small confirmation which was added to that incomparable work of redemption, when God ceased not to show himself the guide of their journey. Accordingly, after they had passed through the Red Sea, he spread a cloud over them by day to protect them from the heat of the sun; and during the night, he gave them light by a pillar of fire, that even in the midst of the darkness they might have a bright token of his presence. This continued display of his goodness was surely an unquestionable proof of his perpetual love, an open demonstration that he had adopted the children of Abraham, to foster them under his protection even to the end. What follows concerning quails, is introduced for a different purpose than that for which reference is made to the same fact in Psalm 78:26. In that passage, God's bringing in an abundance of quails is ascribed rather to his wrath than to his beneficence, that the people might satiate the flesh; and we have seen in the exposition of that place, that this is mentioned as a matter of reproach to them. But in the text before us, passing over their ingratitude, the prophet celebrates the unremitting exercise of the divine loving-kindness towards them. Some, however, may be rather inclined to take the word ask in a bad sense, because the people besought not God with humility, [1] but through their impatience proceeded at once to murmuring, or rather arrogantly spake against him. Thus taken, the passage, by way of amplification, would mean that God, departing from his own right, humoured even their unhallowed lust. As, however, their fault is not here mentioned, let us rest in that meaning which is the most simple, namely, that the blessings by which God ratified the redemption which he had wrought are here clustered together. It next follows, that they were filled with the bread of heaven This appellation, as we have seen elsewhere, is given to the manna by way of eminence. The natural way in which the food which we eat is obtained is from the ground; but God then opened his hand more widely to the Jews, and fed them even from heaven. As it was not enough for them to be refreshed with food when they were hungry, unless they were also supplied with drink, it is added, that the rock was opened, and that the waters flowed from it through the dry places, or the desert.

Footnotes

1 - "It does not appear from the history, that the Israelites supplicated God at all, but only murmured against Moses and Aaron for bringing them into the wilderness." -- Phillips.

He spread a cloud for a covering - See the notes at Psalm 78:14. In Numbers 10:34; it is said that "the cloud of the Lord was upon them by day," and from this seems to have been derived the idea of its "covering" them, as if it were a protection from the heat in the desert.

He spread a cloud for a covering,.... That is, the Lord spread one over their heads as an "umbrella", to protect them from the heat of the sun; this refers to the pillar of cloud, Exodus 13:20, though that seems to have been in an erect posture, and to go before the children of Israel to direct them in their journey, and not a covering to them. Kimchi says it was a covering to them when they rested, but not when they journeyed: but when they rested it only covered the tabernacle, not the people, for anything we read of it, Numbers 9:21, it looks as if there were more clouds than one, and indeed the Jews speak of many, and particularly make mention (e) of one that was over the heads of the Israelites, that the heat of the sun, and the hail and rain, might not have power over them; and of such use this cloud was, at least at certain times, if not always; a type of Christ, who is the covering and shelter of his people from the heat of the fiery law, of the flaming sword of justice, of the wrath of God, of the fiery darts of Satan, and of the fury of wicked men.
And fire, to give light in the night: this respects the pillar of fire which gave them light by night; an emblem of Christ, who is the light of his people, when it is a night season with them, as it sometimes is; a night of affliction and distress, of darkness and desertion, of temptation, of carnal security and sleepiness; when Christ arises as a light in darkness, and enlightens by his presence, by his Spirit, and by his word; as well as is as fire to warm, refresh, quicken, and comfort them when chill and cold, in such seasons.
(e) Vid. Targum in Cant. ii. 6.

covering--in sense of protection (compare Exodus 13:21; Numbers 10:34). In the burning sands of the desert the cloud protected the congregation from the heat of the sun; an emblem of God's protecting favor of His people, as interpreted by Isaiah (Isaiah 4:5-6; compare Numbers 9:16).

Now follows the miraculous guidance through the desert to the taking possession of Canaan. The fact that the cloud (ענן, root ען, to meet, to present itself to view, whence the Arabic ‛ănăn, the visible outward side of the vault of heaven) by day, and becoming like fire by night, was their guide (Exodus 13:21), is left out of consideration in Psalm 105:39. With למסך we are not to associate the idea of a covering against foes, Exodus 14:19., but of a covering from the smiting sun, for פּרשׁ (Exodus 40:19), as in Isaiah 4:5., points to the idea of a canopy. In connection with the sending of the quails the tempting character of the desire is only momentarily dwelt upon, the greater emphasis is laid on the omnipotence of the divine goodness which responded to it. שׁאלוּ is to be read instead of שׁאל, the w before w having been overlooked; and the Kerמ writes and points שׂליו (like סתיו, עניו) in order to secure the correct pronunciation, after the analogy of the plural termination יו-. The bread of heaven (Psalm 78:24.) is the manna. In Psalm 105:41 the giving of water out of the rock at Rephidim and at Kadesh are brought together; the expression corresponds better to the former instance (Exodus 17:6, cf. Numbers 20:11). הלכוּ refers to the waters, and נהר for כּנּהרות, Psalm 78:16, is, as in Psalm 22:14, an equation instead of a comparison. In this miraculous escort the patriarchal promise moves on towards its fulfilment; the holy word of promise, and the stedfast, proved faith of Abraham - these were the two motives. The second את is, like the first, a sign of the object, not a preposition (lxx, Targum), in connection with which Psalm 105:42 would be a continuation of Psalm 105:42, dragging on without any parallelism. Joy and exulting are mentioned as the mood of the redeemed ones with reference to the festive joy displayed at the Red Sea and at Sinai. By Psalm 105:43 one is reminded of the same descriptions of the antitype in Isaiah, Isaiah 35:10; Isaiah 51:11; Isaiah 55:12, just as Psalm 105:41 recalls Isaiah 48:21. "The lands of the heathen" are the territories of the tribes of Canaan. עמל is equivalent to יגיע in Isaiah 45:14 : the cultivated ground, the habitable cities, and the accumulated treasures. Israel entered upon the inheritance of these peoples in every direction. As an independent people upon ground that is theirs by inheritance, keeping the revealed law of their God, was Israel to exhibit the pattern of a holy nation moulded after the divine will; and, as the beginning of the Psalm shows, to unite the peoples to themselves and their God, the God of redemption, by the proclamation of the redemption which has fallen to their own lot.

Covering - To protect them from the heat of the sun.