Exodus 16-18 (The Daily Walk Bible).
Our devotions invited us to consider 1 Corinthians 10:1-4 in conjunction with our passage: “For I do not want you to be unaware, brothers, that our fathers were all under the cloud, and all passed through the sea, and all were baptized into Moses in the cloud and in the sea, and all ate the same spiritual food, and all drank the same spiritual drink. For they drank from the spiritual Rock that followed them, and the Rock was Christ.”
Here is what the ESV Study Bible says about the passage: “Paul is referring to God providing Israel with bread from heaven (“manna,” Exodus 16) and water from a rock. This rock appears both at the beginning of their wanderings in the desert (Ex. 17:1–7) and near the end (Num. 20:2–13). Rabbinic exegesis from after Paul’s time surmised that the rock followed the Israelites throughout their wanderings. This understanding of the rock may have been current in Paul’s time. If so, Paul’s claim that the Rock following them was both spiritual and Christ shows that he did not believe that a physical rock traveled with the Israelites, but that Christ (in spiritual form) was ever-present with them: he was there to supply their need for water, and there to judge those who tested him (1 Cor. 10:9). ‘Rock’ is a common OT name for God (e.g., Deut. 32:4, 15, 18, 30–31), and this probably facilitated Paul’s identification of the rock with Christ.”