When you declare a thing you make it know to all of heaven and all of earth. When you decree a thing you are establishing law. You are making a formal order. The angels of God are awaiting our formal order which must line up with the Word of God. This is why God requires our hearts to be full of His Word; so that we can see the manifestation of our decrees. Everything must be in proper order for heaven to obey. You cannot decree with a heart that is full of lack. You cannot make decree with a heart that is full of disbelief, disappointment, discouragement, un-forgiveness or doubt. It cannot have any resemblance to the adversary of your soul. There must be no reflection of the adversary in you.