Once a man with near nothing, billionaire Albert Gubay has generated billions of dollars - and is donating most of his money to charity.

Albert Gubay, a Roman-Catholic man who remembers a life without money, once promised God he would donate half of his money if he ever became rich, and he is doing just that.

After making a "pact with God", Gubay, founder of the British supermarket chain 'Kwik Save', is donating most of his fortune to charity.

Gubay told the Daily Mail: "I want to carry on supporting good causes, but my whole focus in the next few years is to work as hard as I can to meet my target of a 1 billion pounds ($1.5 billion) charity. Every penny wasted or lost reduces the pot available to the charity."

In 2010, Gubay ranked at No. 880 in the Forbes richest list. He is worth $1.1 billion.

Gubay's actions beg the question; If you were to make a "Pact with God," would you fulfill your promise if your wish came true?