Matthew 13:14
Indeed, in their case the prophecy of Isaiah is fulfilled that says: you will indeed hear but never understand, and you will indeed see but never perceive. The Isaiah 6:9–10 fulfillment quotation connects the crowd's non-understanding to the prophetic pattern of divine judgment through hardening. Isaiah's commission included the paradoxical announcement that his preaching would harden rather than convert — the same paradox appears in Jesus' ministry.