Jamieson, Fausset & Brown

deaf--namely, to the voice of God. blind--to your duty and interest; wilfully so (Isa 42:20). In this they differ from "the blind" (Isa 42:16). The Jews are referred to. He had said, God would destroy the heathen idolatry; here he remembers that even Israel, His "servant" (Isa 42:19), from whom better things might have been expected, is tainted with this sin.