Hebrews 3:12

12Take heedβλέπετε,brothersἀδελφοί,lestμήποτεthere will beἔσταιinἔνanyτινιof youὑμῶνa heartκαρδίαevilπονηρὰof unbeliefἀπιστίαςintoἐντῷfalling awayἀποστῆναιfromἀπὸGodθεοῦ[the] livingζῶντος,

See to it, brothers, lest ever there will be in any of you⁺ an evil heart of unbelief in the falling away from the living God.