עֶשְׂרִים

From the study of Numbers 11:19

Range of meaning

'Twenty', formed as the plural of 'ten' (eser). In counting it takes the singular noun after it ('twenty day').

Against the English

English 'twenty days' is correct. The number is literal here, not symbolic.

Used elsewhere in the period

Standard numeral (BDB). The figures 1–2–5–10–20 roughly double at each step, and the climax of 30 ('a month', v.20) caps the series.