John Calvin Reformed @genevareformer

9. Then he said, Go, and tell that people. And he said, Go, and tell this people. — Eng. Ver. This shows still more clearly how necessary the vision was, that Isaiah might not all at once fail in his course.

Matthew Henry Presbyterian @wholebiblehenry

God takes Isaiah at his word, and here sends him on a strange errand - to foretel the ruin of his people and even to ripen them for that ruin - to preach that which, by their abuse of it, would be to them a savour of death unto death.

Commenting on Isaiah 6:9-13

John Gill Reformed Baptist @doctorgill

And he said, go, and tell this people,.... What is and will be their case and condition, as follows: hear ye indeed; the words of the prophets sent unto them, yea, Christ himself incarnate preaching among them; the great Prophet Moses said should be raised up unto them: but understand not; neither that he is the Messiah, nor the doctrines delivered by him; which were...