When engaging in spiritual warfare against the devil, we must understand the foundations of scripture which give us authority and power to overcome him. We must KNOW the scriptures. We must walk in FAITH and remain STEADFAST in our God-given position until the victory is accomplished. " And the seventy returned again with joy, saying, Lord, even the devils (demons) are subject unto us through Thy name. And He said unto them, I beheld Satan as lightning fall from heaven. Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you." (Luke 10:17-19).