He shall not fail nor be discouraged... — Both verbs in the Hebrew point back to those of the previous verse, He shall not burn dimly nor be crushed, as if to teach that in helping others to strength and light, the servants of the Lord, after the pattern of the Servant, gain light and strength for themselves.
The isles shall wait for his law. — The relation of “the servant” to the far off Gentile world is still dominant in the prophet’s mind. The LXX. Version, given in Matthew 12:21, “In His name shall the Gentiles hope,” is a paraphrase rather than a translation. The words describe the “earnest expectation,” the unconscious longing of the heathen for One who shall be a true teacher (Romans 8:22).