from part of John Darby's Synopsis of the New Testament
on Mark ch.8
Jesus leads the blind man out of the town. He does not forsake Israel wherever there is faith; but He separates the one who possesses it from the mass, and brings him into connection with the power, the grace, the heaven, whence blessing flowed-blessing consequently which extended to the Gentiles. Power was not exercised in the midst of manifest unbelief. This clearly marks out the position of Christ with regard to the people.