dekaokto identifies the number in a group of victims or a span of years in Luke.

The two occurrences use the term to specify a quantity: a group affected by the tower’s fall and the years of a woman’s weakness.

1. Specifying a count or duration · dominant

   In Luke 13:4, the nominative plural masculine form identifies those on whom the tower fell; the APB renders the clause “those eighteen on whom the tower in Siloam fell and killed them.” In Luke 13:11, the accusative plural neuter form marks the extent of the woman’s weakness; the APB renders “for eighteen years.”

   Luke 13:4Luke 13:11

In the Anselm Project Bible: The APB presents the number explicitly in both verses, once with those killed by the tower and once with years of weakness. These phrases confirm the clauses’ numerical contexts rather than isolate a precise English token.