Exodus 40:34-38 Then the cloud covered the tent of meeting, and the glory of the LORD filled the tabernacle. And Moses was not able to enter the tent of meeting because the cloud settled on it, and the glory of the LORD filled the tabernacle. Throughout all their journeys, whenever the cloud was taken up from over the tabernacle, the people of Israel would set out. But if the cloud was not taken up, then they did not set out till the day that it was taken up. For the cloud of the LORD was on the tabernacle by day, and fire was in it by night, in the sight of all the house of Israel throughout all their journeys.
Numbers 9:15 On the day that the tabernacle was set up, the cloud covered the tabernacle, the tent of the testimony. And at evening it was over the tabernacle like the appearance of fire until morning.
Obviously, God was pleased with the obedience of Israel. This was not so much because it showed His superiority over them, but it was more so because it proved they really did believe Him and love Him. There is a real and significant connection between the continually mentioned obedience of Moses and Israel (as the LORD had commanded Moses) and this remarkable display of glory. We shouldn’t think that Moses or Israel earned this display of glory because of their obedience; yet their obedience welcomed it. This is an enduring principle. We don’t earn our rescue, and God doesn’t love us more when we obey. Yet, undeniably, when we walk in God’s light and truth, there is blessing. Proverbs 3:5-6 speaks beautifully to this: Trust in the LORD with all your heart, and lean not on your own understanding; in all your ways acknowledge Him, and He shall direct your paths. The Book of Exodus ends with great hope and trust in God. Though Israel was in the middle of a desolate desert, had fierce enemies in the Promised Land, and was weak and liable to sin and rebellion, God was with them. This gave them great cause for faith and confidence. “To speak of a journey is to look for an arrival: He who has begun a work of salvation for Israel will complete it . (Guzik)
The cloud covered the tabernacle even in the clearest day; it was not a cloud which the sun scatters. This cloud was a token of God’s presence to be seen day and night, by all Israel, that they might never again question, Is the Lord among us, or is he not? It guided the camp of Israel through the wilderness. While the cloud rested on the tabernacle, they rested; when it removed, they followed it. The glory of the Lord filled the tabernacle. In light and fire the Shechinah made itself visible: God is Light; our God is a consuming Fire. Yet so dazzling was the light, and so dreadful the fire, that Moses was not able to enter into the tent of the congregation, till the splendour was abated. But what Moses could not do, our Lord Jesus has done, whom God caused to draw near; and who has invited us to come boldly, even to the mercy-seat. Being taught by the Holy Spirit to follow the example of Christ, as well as to depend upon him, to attend his ordinances, and obey his precepts, we shall be kept from losing our way, and be led in the midst of the paths of judgment, till we come to heaven, the habitation of his holiness. BLESSED BE GOD FOR JESUS CHRIST! (Gill)