ISB ~ 1 Corinthians 10 v4

supernatural Rock:The rock of Horeb that gushed forth drinking water for Israel by a miracle of Moses (Ex 17:6). Jewish tradition believed that the rock followed Israel as a constant source of refreshment on the march through the desert. It is ultimately a type of Christ, who pours out the living waters of the Spirit in Baptism (1 Cor 12:13; Jn 4:14) and the sacramental gift of himself in the Eucharist (1 Cor 10:16; Jn 6:53).