I have surely heard Ephraim bemoaning himself - The exiled Israelites are in a state of deep repentance.
Thou hast chastised me, and I was chastised - I was at first like an unbroken and untoward steer, the more I was chastised the more I rebelled; but now I have benefited by thy correction.
Turn thou me - I am now willing to take thy yoke upon me, but I have no power. I can only will and pray. Take the matter into thy own hand, and fully convert my soul.