Stronghold is a military term meaning "a well-fortified place." Positively, a stronghold is a place of refuge, of protection and safety. David, the warrior-king, praised the Lord for being his stronghold. "I love you, O Lord, my strength. For the Lord is my rock and my fortress and my deliverer, my God, my rock, in whom I take refuge, my shield and the horn of my salvation, my stronghold" (Psalm 18:1-2).
Salvation through Christ, on the basis of his death and resurrection, is essentially a matter of being rescued by the grace of God from the stronghold of Satan and being placed into the stronghold Christ. "He has delivered us from the domain of darkness and transferred us to the kingdom of his beloved Son, in whom we have redemption, the forgiveness of sins" (Colossians 1:13-14).
Those who are "in Christ" are within the sphere of God's blessing and protection, seated with Christ in the heavenly places (Ephesians 2:6) far above every power and authority, human and angelic (Ephesians 1:20-22). Those who are in Christ are held fast in the protective double-grip of God's grace: "I give them eternal life, and they will never perish, and no one will snatch them out of my hand. My Father, who has them them to me, is greater than all, and no one is able to snatch them out of the Father's hand" (John 10:27-29). God is my stronghold--that is the positive truth.
But Christians also use "stronghold" for something evil. Stefanos, my Greek missionary friend, spoke to me recently about some islands of Greece he considers strongholds of Satan, population centers where the dark powers are worshiped and the Gospel vigorously rejected. From this perspective, a "stronghold" is where the enemy's will is being done and where the enemy literally has a strong "hold."
While the normal Christian life is remarkable for its vitality and fruitfulness (John 15:5, Galatians 5:22-23), the remnants of sin hang on, and sometimes the hanger-on is particularly stubborn. The Christian might find himself succeeding increasingly (though never perfectly!) against desires of the flesh in many areas, yet experience continual defeat with the hanger-on. Despite sincere, earnest, energetic and repeated efforts, even over a long period of time, the evil thought or craving or habit persists. Its sophistication and tenacity are uncanny, pointing to demonic influence, and warranting the appellation of "stronghold."
It needn't be a gross or notorious sin. It can be as commonplace as pride, covetousness, anger or envy, a private sin neither flagrant nor enormous in the eyes of man, and yet holding sway in the life under the influence of dark powers. James 3:14-15, "But if you have bitter jealousy and selfish ambition in your hearts, do not boast and be false to the truth. This is not the wisdom that comes down from above, but is earthly, unspiritual, demonic."
I believe many devoted Christians battle such problems, some bludgeoned by secret doubts and Giant Despair. "God has given up on me." "I'll never be a godly person." "I'll never walk with God again." "This is how it will always be."
A faulty understanding of salvation may be part of the problem. We need to know that salvation in Christ is more than being forgiven. It is more than being spared God's eternal judgment. It is more than knowing that one day we will be delivered from the very presence of evil in heaven. Salvation is all that--praise God! But there is more.
"The reason the Son of God appeared was to destroy the works of the devil" (I John 3:8). Jesus came to free us from sin's enslaving power and undo the damage done by the enemy...in this life. He has saved from the penalty of sin. He will save from the presence of sin. And he now saves from the dominating power of sin (see esp Romans 6). Jesus came to free the captives. "And you will know the truth, and the truth will set you free" (John 8:32). "So if the Son set you free, you will be free indeed" (John 8:36). "For freedom Christ has set us free" (Galatians 5:1).
The Lord Jesus does not accept the presence of strongholds as status quo. They are an offense to his glory and a challenge to his authority. He will not throw in the towel; nor should we. He who began a good work in us is determined to carry through (Philippians 1:6; I Thessalonians 5:23-24). But he will work us too, his dearly beloved, he will work us with a loving relentlessness so that we become persuaded that sin shall not have the mastery. "For it is God who works in you, both to will and to work for his good pleasure" (Philippians 2:13).
But we must trust in God afresh if we would win out over strongholds. And this the Destroyer and Murderer will resist, for he is not satisfied to have us mired in sin; he wants to destroy our faith in God altogether. When Jesus saw that Peter was to be sifted by Satan and knew that Peter would fall into sin and deny him, he prayed that Peter's faith would not fail (Luke 22:31-32). Why? Because the denial, bad as it was, was not the greatest danger facing Peter. The greatest danger was the ruin of Peter's faith on the other side of failure. So Jesus prayed his faith would not fail, and instructed him to strengthen others when he turned again.
Is it not obvious how our faith in God is harmed when we have made solemn resolutions to God and ourselves, claimed Bible promises, prayed earnestly, and tried and tried to "kill" (Romans 8:13, Colossians 3:5) a tenacious sin, only to fail again and again? The very connecting tissue of our relationship with God is damaged. In time we lose the joyful confidence in God we had as young Christians. God's promises become suspect. We begin to think our sin is too great for God, or God is too small. We begin to question the reality of His power and goodness, at least as applied to ourselves.
The way forward begins just as the Christian life began--by grace through faith in Christ alone. We must continually believe, as we did at the first, that God is greater than our sin. God's grace is sufficient. God's power is made perfect in weakness. With God all things are possible. Nothing is too hard for him. "With God we shall do valiantly; it is he who will tread down our foes" (Psalm 60:12).