Being prepared for increase could be as simple as increasing your capacity to receive. Once, several years ago, I received a prophecy that God was taking me into a time of pressing in to Him, a time of fasting and prayer and that I was to prepare myself to receive all He had for me. I was told I needed to ‘increase my capacity to receive.’ At the time, I thought ‘that’s silly; I am ready for whatever God wants to pour on me.’ 
