Now all this happened in order to fulfill what was spoken by the Lord through the prophet [Isaiah 7:14], saying,

For this is the man who was spoken of by Isaiah the prophet, who said, [Isa. 40:3], "[It is] the voice of a man who speaks out in the desert, [urging people to] make the road for the Lord ready [for Him to travel]; to make a straight pathway for Him [to walk on]."

[This was] so that what Isaiah the prophet had spoken would be fulfilled, saying,

This was in order to fulfill what was spoken by Isaiah the prophet, saying, [Isa. 53:4], "[He] Himself took [care of] our [physical] weaknesses and carried [away] our diseases."

so what was spoken by the prophet Isaiah would be fulfilled when he said,

So, the prophecy of Isaiah is being fulfilled by them, which says, [Isa. 6:9f] 'You will hear all right, but you will not understand [what you hear]. You will see all right but you will not perceive [what you see].

You hypocrites! Isaiah prophesied accurately about you, saying [Isa. 29:13],