Greek with KJV and Strong's Concordance for Hebrews 3:12

King James Bible: Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.

American Standard Version: Take heed, brethren, lest haply there shall be in any one of you an evil heart of unbelief, in falling away from the living God:

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