Luke 13:4

those eighteen, upon whom the tower in Siloam fell It is an ingenious, but of course uncertain conjecture of Ewald, that the death of these workmen was connected with the notion of retribution because they were engaged in building part of the aqueduct to the Pool of Siloam, for the construction of which Pilate had seized some of the sacred Corban-money (Mark 7:11; Jos. B. J.11. 9, § 4);

Siloam The pool (John 9:7; Isaiah 8:6), near the village of Silwan, at the entrance of the Tyropoeon valley, which runs into the valley of Jehoshaphat between Sion and Moriah.

that they were sinners Rather, that they themselves were debtors.