Summarize the key message and supporting scriptural points from the document titled 'THE BOOK OF ISAIAH Wait Upon the Lord'.

Answer
The document provides a summary of Isaiah 40, focusing on the theme of God's immense power and greatness addressed to a discouraged people (the Israelites in Babylonian captivity). The message is structured by showing that God is 'bigger' than four specific entities based on specific scripture verses: 1) Nature (Isaiah 40:12-14), 2) Nations (Isaiah 40:15-17), 3) Idols (Isaiah 40:18-20), and 4) Human rulers (Isaiah 40:21-23). It concludes by emphasizing that because God created and named the stars, He is more than capable of handling personal human problems like addiction, depression, or illness. The ultimate take-away is to 'wait upon' and put hope in God because He is bigger than any challenge.