About taking the high ground for victory:

Numbers 13:17 When Moses sent them to explore Canaan , he said, "Go up through the Negev and on into the hill country. 18 See what the land is like and whether the people who live there are strong or weak, few or many. 19 What kind of land do they live in? Is it good or bad? What kind of towns do they live in? Are they unwalled or fortified? 20 How is the soil? Is it fertile or poor? Are there trees on it or not? Do your best to bring back some of the fruit of the land." (NIV)

In your spiritual war of life, you always want the highest ground. You want the highest ground in your spiritual war because the high ground gives you a view of the adversary's location and the adversary's activities. You want the high ground so the adversary must exert extra effort while walking uphill to defeat you. You want the high ground so when you engage your adversary, your forces will have more energy because your forces are running downhill instead of uphill. The higher the ground you can claim, the better. The steeper the incline to get to your current position, the more secure you will be. When you are on the high ground, build an impenetrable fortress around you. In your spiritual life, the high ground is righteousness or always doing the right thing. The height of your position is how much you love God. Your fortress is made strong by the exercising of your faith. Your power is the power of God in you unleashed by your attitude of never surrendering to the darkness and never surrendering to temptation.