Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.
Berean Study Bible (BSB) - Hebrews 3:12 >See to it, brothers, that none of you has a wicked heart of unbelief that turns away from the living God.
Textus Receptus (TR) - Hebrews 3:12 >Βλέπετε, ἀδελφοί, μήποτε ἔσται ἔν τινι ὑμῶν καρδία πονηρὰ ἀπιστίας ἐν τῷ ἀποστῆναι ἀπὸ Θεοῦ ζῶντος·