God works in mysterious ways with His wonders to perform. Belief is a powerful attitude that is closely linked to faith. You believe in someone and this belief translates into action. Belief in miracles translates into substance. This is transmutation from one form into another. Thought changes into substance. This is the realm of the miraculous. It all hangs on belief. Faith in the power of the gospel to save, heal, and deliver translates into salvation, healing, and deliverance. The Holy Spirit provides the unction to believe and this belief becomes fact. It seems like an illusion but an illusion does not have substance. Thought is one form and substance is another form. They both originate from the same source. The fish is one form that has apparatus to survive in water while the bird is another form that has wings to fly.
Man
A man was formed in the image of God and therefore can think and do like God. An image is a reflection of the real. You see your image in the mirror and see what you look like. Your image in the mirror that you see is the image of God. When you believe this then you will act like God in love and righteousness. God is love, faith, hope, and all things good and lovely. When you bear these fruits then you reflect the image of God. What we imagine comes from God.
Imagination
Imagination has creative power. Imagination is from the Spirit in us. God is Spirit and He created us as a spirit residing in a body. Therefore when we imagine something we are creating something from our spirit. This is how dreams and visions are formed. In our fallen state, most of our imagination comes from our soul. Our born-again spirit can imagine from our spirit man. This is why we can now imagine like God as He communicates with our spirit. This way the gifts and fruits of the Holy Spirit manifest through us.