For this is the one who was spoken about by the prophet Isaiah, saying, "The voice of one crying out in the wilderness, 'Prepare the way of the Lord, make his paths straight.'"

in order that what was spoken by the prophet Isaiah would be fulfilled, who said,

in order that what was spoken through the prophet Isaiah would be fulfilled, who said, "He himself took away our sicknesses, and carried away our diseases."

in order that what was spoken through the prophet Isaiah would be fulfilled, who said,

and with reference to them the prophecy of Isaiah is fulfilled that says, "{You will listen carefully} and will never understand, and {you will look closely} and will never perceive.

Hypocrites! Isaiah correctly prophesied about you saying,