Isaiah calls God's people to trust only in the Holy One of Israel for salvation. Isaiah witnesses many highs and lows among God's Covenant people during his long 60 year ministry. He prophesies messages from God relating to the people of his day but also foretells the coming of the Messaiah, the Servant King, who would save the whole world from sin. Isaiah also tells of the future glory for all who turn to God and receive His salvation.