John 7:38 Out of my BELLY, the believer or Jesus?

Addressing this text might seem irrelevant to some but it is a part of the ‘whole’ of christian doctrine. We examine what Jesus meant when He said “out of His belly shall flow rivers of living water”, did He refer to the believer, or to Himself, Jesus?
We examine this in view of the whole bible, arriving at an exegetical (contextual-bible source) conclusion.
Listen and be blessed.