The overflow is a supernatural supply that maintains its strength contrary to prevailing climatic and economic factors or forces. It is supply that has no respect for the economy or climate.
That is the kind of supply that Isaac experienced during famine. Genesis 26:1, 12 says, "And there was a famine in the land and Isaac sowed in that land and he reaped in the same year a hundred fold and the Lord blessed him" (paraphrased). This book is a deep exposition on 21 uncommon keys to financial overflow. Read it, learn the secrets and step out of every trace of scarcity in your life into the realm of continuous financial overflow, now and always.