In the Old Testament, God promised Joshua and the children of Israel all the land upon which they set foot, but they still had to take possession of it. Likewise, believers have the authority to tread upon all the forces of darkness and bring their schemes to nothing.
In this 3-CD series, Kenneth W. Hagin explains that faith is similar to athletic ability. An athlete exercises and diligently practices his skill to grow stronger and improve his performance. We strengthen our faith in much the same way—by continually exercising it! We can plow through life with weak faith or we can discover practical.