God’s promises exists in the spirit world. They become hope when we imagine them. We bring them into the physical world by faith.

[Hebrews 11:1-3] Now faith is the substance of things hoped for, the evidence of things not seen. For by it the elders obtained a good testimony. By faith we understand that the worlds were framed (imagined) by the word of God, so that the things which are seen were not made of things which are visible.