Luke 7:26-28 (KJV)
26 But what went ye out for to see? A prophet? Yea, I say unto you, and much more than a prophet.
27 This is he, of whom it is written, Behold, I send my messenger before thy face, which shall prepare thy way before thee.
28 For I say unto you, Among those that are born of women there is not a greater prophet than John the Baptist: but he that is least in the kingdom of God is greater than he.
John Prepared The Way For The Lord
Even when Isaiah was written 700 years before Christ, the prophesy of John came true at the exact moment of time that it was destined to happen.