1 Corinthians 10 v 4


1 Corinthians 10:4 
And did all drink the same spiritual drink: for they drank of that spiritual Rock that followed them: and that Rock was Christ. 


10:4. As a fifth advantage, Paul listed the spiritual drink enjoyed by Israel in the desert (Ex. 17:6). According to Paul, Christ was the source of this supernatural water. Since the incident of the rock which produced water marked the beginning of Israel’s wilderness wanderings (Ex. 17:1-7) and happened again near the ending of their wanderings (Num. 20:1-13), Paul concluded that Christ accompanied them. Christ too was the source of supernatural water for the Corinthians (cf. John 4:10-14). 

It is possible that these five blessings were intended by Paul to reflect the two ordinances of baptism (1 Cor. 10:1-2) and the Lord’s Supper (vv. 3-4) which the Corinthians may have thought communicated a magical protection like similar rites in some of the mystery religions. The Corinthians did seem to have a distorted view and practice of both of these ordinances (cf. 11:17-34; 15:29) which required correction. 

Excerpt from: 
Walvoord, J. F., Zuck, R. B., & Dallas Theological Seminary. (1983-c1985). 
The Bible Knowledge Commentary : An Exposition of the Scriptures. 
Wheaton, IL: Victor Books.