| Gill's Exposition of the Entire Bible And the cloud of the Lord was upon them by day,.... Not only upon the tabernacle, and upon the ark particularly, but it spread itself in journeying over the whole body of the people, and therefore said to be a covering to them from the heat of the sun, Psalm 105:39; as well as it was a guide unto them, and a token of the divine Presence with them, see Isaiah 4:5, when they went out of the camp; or out of the place of their encampment, when they removed from Sinai; and appears from, hence that it was in the daytime.
Geneva Study BibleAnd the cloud of the LORD was upon them by day, when they went out of the camp.
Wesley's Notes 10:34 By day - And by night too, as was expressed before. So we must learn to compare places of scripture, and to supply the defects of one out of another, as we do in all authors.
Matthew Henry's Concise Commentary10:33-36 Their going out and coming in, gives an example to us to begin and end every day's journey and every day's work with prayer. Here is Moses's prayer when the ark set forward, Rise up, and let thine enemies be scattered. There are those in the world who are enemies to God and haters of him; secret and open enemies; enemies to his truths, his laws, his ordinances, his people. But for the scattering and defeating of God's enemies, there needs no more than God's arising. Observe also the prayer of Moses when the ark rested, that God would cause his people to rest. The welfare and happiness of the Israel of God, consist in the continual presence of God among them. Their safety is not in their numbers, but in the favour of God, and his gracious return to them, and resting with them. Upon this account, Happy art thou, O Israel! who is like unto thee, O people! God will go before them, to find them resting-places by the way. His promise is, and their prayers are, that he will never leave them nor forsake them. | 
