1 Corinthians 10:1,2

Our Fathers, the Jews, were all under the cloud. He means, when God conducted the camp of the Israelites, in the day-time by a cloud, and in the night by a pillar of fire. (Exodus xiii. 21.) (Witham) --- In Moses. Under the conduct of Moses they received baptism in figure, by passing under the cloud and through the sea: and they partook of the body and blood of Christ in figure, by eating of the manna, (called here a spiritual food, because it was a figure of the true bread which comes down from heaven) and drinking the water miraculously brought out of the rock, called here a spiritual rock; because it was also a figure of Christ. (Challoner) --- Were baptized in the cloud, and in the sea, figuratively, these being figures of baptism in the new law. As Moses, who delivered them from the slavery of Egypt, was figure of Christ, who came to deliver mankind from the slavery of sin. (Witham)