The blind = Blind (no Art. in this verse, because only some of each kind are meant. Not all the blind, &c.) These were the miracles foretold of Him (Isa_35:5, Isa_35:6; Isa_61:1). No others (qua, miracles) would have sufficed as His credentials.
the dead = dead (persons). No Art. See App-139.
raised up = raised to life.
have the gospel preached to them. This is one word in the Greek (euangelizo) = are told the good news or glad tidings (Isa_61:1).