Rock that followed

Many commentators suggest that Paul borrows his notion of a Christological Rock that follows Israel through the wilderness from intertestamental commentary on the OT. That may be, but the notion of is already evident in the OT itself. Yahweh after all is the Rock of Israel, and both leads and serves as rear guard for the people.

Isaiah 32:2 hints at the connection between Yahweh the Rock and Yahweh the glory-pillar. Describing the princes who will rule Zion in justice, Isaiah implicitly compares the princes to Yahweh. Like Yahweh, the princes will be “like the shade of a rock of glory in an exhausted land.” The reference is clearly to Yahweh the Rock in the wilderness, and that reference to the Rock doubles with a reference to the Lord’s kabed , His glory. Yahweh is Rock and Glory, the Glory-Rock of Israel.