
Heidelcast Heidelcast: Superfriends Saturday: Are the Length of Creations Days and the Age of the Earth in Genesis 1 Markers of Orthodoxy?
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Feb 7, 2026 A lively discussion on whether the length of the creation days and the earth’s age are proper markers of doctrinal orthodoxy. Historical survey of how Reformed thinkers treated Genesis and when a 24-hour day became a litmus test. Conversation on why creation debates grew heated and how confessions, not personal positions, should guide church standards.
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Modern Litmus Test Is Recent
- The six 24-hour-day view became a modern litmus test only in the 20th century, not historically constant.
- Scott Clark argues confessions, not personal views on creation days, should mark orthodoxy.
Historic Conservatives Held Diverse Views
- Many early and respected conservative theologians (e.g., J. Gresham Machen) did not insist on 24-hour creation days.
- Excluding such figures today shows how standards for orthodoxy have shifted.
Separate Distinct Creation Questions
- Don't conflate different creation questions; separate day-length, earth-age, mechanism of human origins, and science relations.
- Ask each specific question to avoid false assumptions about a person's full view.







