John 7:37 → Isaiah 55:1

Jesus' invitation on the last day of the Feast of Tabernacles — "If anyone is thirsty, let him come to Me and drink" (John 7:37) — takes up the form of Isa 55:1's eschatological invitation (thirst addressed, waters offered, price refused) rather than a rare shared word, since the only Greek lexeme the two share is the stock διψάω (dipsaō): hoy kol-tsame lechu lamayim ("Come, all you who are thirsty, come to the waters"). Both texts use the thirst-invitation formula as the opening of a summons to eschatological salvation: Isaiah calls Israel to the messianic banquet, while Jesus enacts that invitation in his own person at the climactic water-pouring ceremony of the feast. The Feast of Tabernacles itself was associated with Isa 12:3's promise of drawing water with joy from the springs of salvation, making the Isaianic backdrop of John 7 multiply rich. Jesus does not merely echo the prophetic form but claims to be its fulfillment — the one from whom "streams of living water will flow" (7:38), replacing the ceremonial water-drawing with himself as the source of the Spirit.