Possible Clues:

• Prophet of ancient Judah
• First of the major Hebrew prophets (OT)
• Savings scheme — one that's good making profit, reportedly
• Book one owns about investing capital
• Commonly told to look up prophet
• 'Unto us a son is given' source
• Prophet with his own book
• OT book
• Prophet is — I get it now — embracing one
• Song of Solomon follower