Throughout the bible we are taught strategies for war and engagement against the enemy. We seldom go out with physical armour looking or a physical battle. We are aware that we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places. (Ephesians 6:12)
As such we wear the full armour of God, to be able to stand against the attacks of the enemy. (Ephesians 6:11) We understand the power in the word of God which is quick, and powerful, and sharper than any two edged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart. (Hebrews 4:12)
For it was the word of God which Jesus used to win, against the temptations of the Devil, when he tempted him in the wilderness. We also know the power that is in the name of Jesus, as God has given him a name which is above every other name. And at the name of Jesus, demons tremble. (James 2:19)
Fasting and prayer is also another powerful strategy against spiritual strongholds. When Esther learnt of the threat against her people, she called a fast and prayed for three days and gained victory over the enemy. (Ester 4:16)
This was a corporate fast which prevailed, due to the strength in numbers and the people of God coming together in unity. Jehoshaphat also called a fast when the great armies came up against his people and they prevailed over them. (2 Chronicles 20)
So as believers when we feel threatened and harassed by the enemy, do not sit down and cry and wait for the attacks to come. Arise with strength and put on the full armour of God. Use the word, the name of Jesus and the blood of Jesus and seek God in fasting and prayer. These are the strategies that God has given us to wage war, and the final caution is do not fear. God has not given us a spirit of fear but of power love and a sound mind. (2 Timothy 1:7)
So rebuke the spirit of fear and use the strategies that God has given us and stand in authority against the enemy. Be strong and very courageous because we are victorious.