Isaiah 50:5 - Matthew Poole's English Annotations on the Holy Bible

Hath opened mine ear; hath revealed unto me; or rather, hath given me a power and will to hear and receive his commands, as this phrase is used, Psalms 40:6 Isaiah 35:5, and elsewhere. I was not rebellious; I readily did and suffered what he required of me. Neither turned away back: the same thing repeated in other words. I did not turn away mine ear from hearing any of God's commands, nor my feet from gong where God sent me, how difficult or dangerous soever my employment was. He seems to allude to the former prophets, who had, divers of them, shrunk back, and for a time refused such work as God called them to, as Moses, Exodus 3:11,13, Jonah 1:8, and others.