Strong G1994 ἐπιστρέφω epistrephō · to turn

John

1. John 12:40
   He hath blinded their eyes, and hardened their heart; that they should not see with their eyes, nor understand with their heart, and be converted, and I should heal them.
2. John 21:20
   Then Peter, turning about, seeth the disciple whom Jesus loved following; which also leaned on his breast at supper, and said, Lord, which is he that betrayeth thee?