Ephesians 5:13

13 but when anything is exposed by the light it becomes visible, for anything that becomes visible is light.

Ephesians 5:13 In-Context

11 Take no part in the unfruitful works of darkness, but instead expose them.
12 For it is a shame even to speak of the things that they do in secret;
13 but when anything is exposed by the light it becomes visible, for anything that becomes visible is light.
14 Therefore it is said, "Awake, O sleeper, and arise from the dead, and Christ shall give you light."
15 Look carefully then how you walk, not as unwise men but as wise,
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.