Jenova being in the lifestream created it. I helped it spread. The waters in the church --

[Cloud knows what Church]

Being connected to the lifestream itself, the power there made it go dormant.

[That was her doing. He knew she was trying to foil his plans from within the lifestream from the start.]

As for that ...

[He moves closer to where Cloud is standing, though not directly beside him, more like behind still a bit of a distance away.]

Consider it a reminder from when you left the first time.