The Science in the Bible

Entry 43 · Section 5: Heal

Seven Days, Then Look Again

A priest examines a mark on skin, cloth, leather, or a house, waits seven days when needed, and inspects it again.

Scripture: Lev 13–14

EpidemiologyPublic HealthMedicine

The observation interval as an instrument. A 0.118 in (3 mm) assumed threshold resolves 0.017 in/day (0.428571 mm/day) after seven days and 0.008 in/day (0.214286 mm/day) after 14 days.
The observation interval as an instrument. A 0.118 in (3 mm) assumed threshold resolves 0.017 in/day (0.428571 mm/day) after seven days and 0.008 in/day (0.214286 mm/day) after 14 days.

The question

What rate of visible change can a repeated seven-day observation interval resolve?

Why it matters

Repeated inspection measures direction of change without assigning one modern diagnosis to every biblical condition.

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