The Lord GOD hath opened mine ear, and I was not rebellious, neither turned away back. Neither turned away back "Neither did I withdraw myself backward" - Eleven MSS. and the oldest edition prefix the conjunction ו vau; and so also the Septuagint and Syriac.
Related Commentaries of Isaiah 50:5
Isaiah 50:5
5 The Lord GOD hath opened mine ear, and I was not rebellious, neither turned away back.