And did all drink the same spiritual drink: for they drank of that spiritual Rock that followed them: and that Rock was Christ.
Drink (Exodus 17:6; Numbers 20:8) - the literal water typified, and so is called "spiritual drink."
Spiritual Rock that followed them. The tradition of Rabbi Solomon on Numbers 20:2 is, that the rock, or at least the stream from it, followed the Israelites from place to place (cf. Deuteronomy 9:21). Christ, the "spiritual Rock" (Deuteronomy 32:4; Deuteronomy 32:15; Deuteronomy 32:18; Deuteronomy 32:30-31; Deuteronomy 32:37; Psalms 78:20; Psalms 78:25; 1 Peter 2:6), 'accompanied them' (Exodus 33:15). "Followed" implies His attending on them to minister to them; though mostly going before them, He, when occasion required, followed "behind" (Exodus 14:19). He satisfied their bodily thirst whenever they needed it: four occasions are expressly recorded (Exodus 15:24-25; Exodus 17:6; Numbers 20:8; Numbers 21:16-18). This water symbolized that from the spiritual Rock (cf. John 4:13-14; John 7:38: see note, 1 Corinthians 10:3), which believing Israelites drank in types. As by the stream the rock followed them, so by His Spirit Christ is with us to the end of the world.
Was - represented (Matthew 26:26).