'Prophet' in the Bible

as it is written in Isaiah the prophet, Behold, I send my messenger before thy face, who shall prepare thy way.

But Jesus said to them, A prophet is not despised save in his own country, and among his kinsmen, and in his own house.

And others said, It is Elias; and others said, It is a prophet, as one of the prophets.

but should we say, Of men they feared the people; for all held of John that he was truly a prophet.