NET
12 See to it, brothers and sisters, that none of you has an evil, unbelieving heart that forsakes the living God.
Darby
12 See, brethren, lest there be in any one of you a wicked heart of unbelief, in turning away from [the] living God.
KJV
12 Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.