Our God is the only one who can justify us, since He is just. We can spot when others are justifying their actions for selfish reasons rather than legitimate ones. But the biggest danger is when we declare our own (wrong) actions to be justified, often because we feel empowered to right the wrongs done to us.
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Scripture quotations taken from the NASB (New American Standard Bible) Copyright 1995 Copyright by The Lockman Foundation. Used by permission. All rights reserved.