The assurance we have is this, "49 Your fathers ate the manna in the wilderness, and they died. 50 This is the bread that comes down from heaven, so that one may eat of it and not die." - John 6:49, 50.

These are strong words that our Savior utters stating that in order for us to have life we need to consume Christ. We need to remember that Christ tells us we literally consume Christ by taking hold of him by faith and being joined to him.