John 9:2 → Exodus 20:5

Exodus 20:5 belongs to the second commandment: God is "a jealous God, visiting the iniquity of the fathers on their children to the third and fourth generations of those who hate Me," balanced at once by "loving devotion to a thousand generations of those who love Me" (Exodus 20:5-6). It speaks of households that go on hating God, and Ezekiel guards it from misuse: "A son will not bear the iniquity of his father" (Ezekiel 18:20). The disciples' question, "Rabbi, who sinned, this man or his parents, that he was born blind?" (John 9:2), assumes a straight line from someone's sin to this blindness; the parental option may lean on a careless reading of the commandment. The tie is quiet: no words are shared, only the assumption. Jesus answers by contrast: "Neither this man nor his parents sinned, but this happened so that the works of God would be displayed in him" (John 9:3). He declares, "I am the light of the world" (9:5), and sends the man to Siloam, "which means 'Sent'" (9:7). Where the disciples looked back for someone to blame, Jesus turns them to what God is doing through the One He has sent, and the story ends with the healed man worshiping Him (9:38).