Today's manna (God's living Presence and His sustaining Word) is all you have to live on. Yesterday's is good, but it won't keep you alive. Only what is filled with fresh life breathed from God has the power to sustain you. If God were to return today and look inside you, would He find enough evidence to identify you as one of His living sons? Many Christians are walking around with a lot of knowledge of God, but they are not filled with the divine 'rouach' (literally translated means 'air') or breath of Jesus, and are living on borrowed spiritual time. We must not think we can continue on anything less than His living Presence. It is good for 24 hrs. but tomorrow you need some more to live eternally. That is because it is food for our Spirit man, not just the mind. This life comes from the place of daily abiding in His Word. The Bible says that when the Israelites in the Old Testament gathered the manna (Heaven's bread) from the fields that had fallen the day before, it was no longer edible, but 'stank.'