Our World As Witness (with Xandra Grieme)

from PEP Talk · host Andy Bannister

God reveals Himself to humanity in two "books" - the Bible and Creation. We're used to using the Bible to explain the gospel, but is it possible to use the natural world to draw people to Christ? Andy Bannister and Simon Wenham explore this possibility with American biologist Xandra Grieme.Xandra's book is Forty Answers From Nature: What We Can Learn about God, Life, and Ourselves by Studying the Natural World and her website is Biopologetics.comXandra Grieme is a speaker and author. Her scientific research began with studies in parasite behavior. She later worked in a human blood lab developing treatments for blood cancer until finally moving on to conservation of songbirds in New Zealand. Xandra also studied theology at OCCA The Oxford Centre for Christian Apologetics, which inspired her to begin writing on the philosophy of science. Xandra has spent extended time living and researching abroad in Asia, Africa, Oceania, and the UK. She is passionate about educating Christians on our role as stewards of God’s natural world. Xandra currently lives in Colorado where hikes through the Rocky Mountains are a constant reminder of God’s power and goodness.

What this episode covers

God reveals Himself to humanity in two "books" - the Bible and Creation. We're used to using the Bible to explain the gospel, but is it possible to use the natural world to draw people to Christ? Andy Bannister and Simon Wenham explore this possibility with American biologist Xandra Grieme. Xandra's book is Forty Answers From Nature: What We Can Learn about God, Life, and Ourselves by Studying the Natural World and her website is Biopologetics.com [https://www.biopologetics.com/] Xandra Grieme is a speaker and author. Her scientific research began with studies in parasite behavior. She later worked in a human blood lab developing treatments for blood cancer until finally moving on to conservation of songbirds in New Zealand. Xandra also studied theology at OCCA The Oxford Centre for Christian Apologetics, which inspired her to begin writing on the philosophy of science. Xandra has spent extended time living and researching abroad in Asia, Africa, Oceania, and the UK. She is passionate about educating Christians on our role as stewards of God's natural world. Xandra currently lives in Colorado where hikes through the Rocky Mountains are a constant reminder of God's power and goodness.

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Our World As Witness (with Xandra Grieme)

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This episode was published on June 17, 2026.

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