He was the one the prophet Isaiah was referring to when he said, "He is a voice calling out in the wilderness: "Prepare the way for the Lord! Make his paths straight!'"

in order to fulfill what was declared by the prophet Isaiah when he said,

This was to fulfill what was declared by the prophet Isaiah when he said, "It was he who took our illnesses away and removed our diseases."

This was to fulfill what was declared by the prophet Isaiah when he said,

"With them the prophecy of Isaiah is being fulfilled, which says: "You will listen and listen but never understand. You will look and look but never comprehend,

You hypocrites! How well did Isaiah prophesy of you when he said,