18 Job 28.5 Subterranean fire
<p><b>Job 28:5 (ESV) </b>
<sup>5 </sup> As for the earth, out of it comes bread, but underneath it is turned up as by fire. </p>
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<p>That this fact was known in Job's time is objective evidence of God's existence, because people of Job's time had no instrumentation we know of able to reveal this fact of the physical world. So the knowledge must have come from God.</p>