what use did Isaiah make of these names in his prophetic teachings
Speech and writing.
Isaiah is an Old Testament prophet and not a New Testament saint.
King Ahaz did not listen to the prophet
A prophet
Each prophet wrote his prophecies as commanded by God.
Because they do things in threes. They had three prophecies for Macbeth and now they have three for Banquo.
Although some claim to have seen prophecies, the original prophet was Jesus Christ the Savior, who founded the religion in the 0030's AD.
None of the minor prophets did it.
It is the major prophet Isaiah , one the birth of jesus christ and two second death of Jesus Christ.
God told the prophet Hosea to take a wife who is a harlot. He then drew parallels between the faithlessness of his wife and the faithlessness of the Israelite people in his prophecies to the nation.
The book of Isaiah begins with his telling the prophecies, so there are no narratives telling about his childhood.
No, there is no historical evidence to suggest that the prophet Isaiah was a slave. He is known as a prominent figure in Jewish and Christian religious texts, particularly for his prophecies regarding the future Messiah.