It is not my doctrine. It is a benefit of believing that Jesus died on the cross according to the scripture. That he was buried and that he rose again the third day. Other benefits include healing and divine righteousness.
Think about Abraham, Jacob, Job, David, were they rich? Job was very wealthy and it was God hedging him about that got him those riches. Without Gods hedge the Devil destroyed not only the wealth but his family too. When God restored that hedge, after he prayed for his religious friends, Job got it all back.
Re read my post again and consider if I said anything out of line with scripture. I said that as your soul prospers your prosperity will come. Money is not the root of all evil, the love of money is. Riches do not hinder you from entering into the kingdom, trusting in them does.