St. Simeon the Stylite
Ascetic and pillar-saint. Converted immediately by the Gospel beatitudes; stood on a pillar for eighty continuous years, praying day and night.
Preface and Praise of Sacred Scripture
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Chapter I: On the Excellence, Necessity, and Fruit of Sacred Scripture
— Converted immediately by the Gospel beatitudes; stood on one foot atop a pillar for eighty continuous years
"A single reading of the Gospel was able... to convert Simeon the Stylite immediately"