John 4:14 → Exodus 17:6

At Rephidim a thirsting, contending people stand ready to stone Moses, and Yahweh answers, "Behold, I will stand there before you by the rock at Horeb. And when you strike the rock, water will come out of it for the people to drink" (Exod 17:6) — water gushing from struck rock as Israel's life in the wilderness, the provision the Psalter then sings ("He struck the rock so that water gushed out," Ps 78:20). At Jacob's well a wearied Jesus turns the woman's question about this water toward another: "whoever drinks the water I give him will never thirst. Indeed, the water I give him will become in him a fount of water springing up to eternal life" (John 4:14). The link runs along the canon's living-water thread (Ps 36:9; Isa 12:3; 44:3; 55:1; Jer 2:13; 17:13; Ezek 47:1-9) rather than by a tight type→antitype escalation — the proper rock-typology has its antitype in Christ as the struck Rock (Paul: "and the Rock was Christ," 1 Cor 10:4), whereas John 4:14 turns on the water Christ gives, an analogical advance on the wilderness provision. The analogy is precise: the wilderness rock yielded water external to the people, drunk once and thirsted-for again (so Jesus says of the well, "Everyone who drinks this water will be thirsty again," v. 13); the water Christ gives becomes an interior spring, never exhausted, "springing up to eternal life." (Anti-default: this is Longitudinal Theme + Analogy, not Typology — the escalation belongs to the rock→Christ axis Paul draws, not to John 4:14, whose contribution is the interior, eternal facet of the living-water motif.) This is the distinct Samaritan-well facet of the living-water Christology — the interior, eternal spring — as against the festal, Spirit-naming, outward-flowing rivers of John 7:37-39 and the pre-incarnate identification of 1 Cor 10:4. The telos: the rock could be struck and drunk, yet the desert thirst returned; here the wells of the world — Jacob's included — are exposed as never enough, and Christ offers Himself as the water that ends thirst forever. To behold Him is to taste the spring that no longer leaves the heart parched, the fountain so satisfying that having drunk of Him one need not, and would not, return to lesser wells — Christ the desirable Living Water, not merely the rock foreshadowed.