NET
4 and all drank the same spiritual drink. For they were all drinking from the spiritual rock that followed them, and the rock was Christ.
Darby
4 and all drank the same spiritual drink, for they drank of a spiritual rock which followed [them]: (now the rock was the Christ;)
KJV
4 And did all drink the same spiritual drink: for they drank of that spiritual Rock that followed them: and that Rock was Christ.