Isaiah was a man of sin before he was God. He was convicted and confessed his sins and when God asked who should he send as a messenger for his people, Isaiah with no hesitation said to send him. He full heartedly served for God. So he did as he was told and went to warn judgment on Judah and Jerusalem. Isaiah seen the coming of Messiah. He saw the birth of Christ and also his death. Isaiah is called the evangelical prophet because the book of Isaiah talks about the work of Christ more than any other book of the old Testament.