The first attack line of Satan is through lies (strongholds) that are designed to capture the mind and then the souls of men. When Christ enters our life He inhabits the heart or inner being of man. For us to surrender to Him to be Lord over all of us through His Godly design, His spirit has to move through our soul. When the soul is filled with lies of the mind it will derail Christians every time.
“For though we live in the world, we do not wage war as the world does. The weapons we fight with are not the weapons of the world. On the contrary, they have divine power to demolish strongholds. We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ. “ 2 Corinthians 3-5 (NIV translation)
Strongholds are ways or lies we have developed that keep our inner man in bondage to self. There is a national stronghold in teaching a half gospel that came about between the war of 1812 and the beginning of WW1. As Americans began to move west the Holy spirit devised a way to reach people on the go. Drive the people into the arms of a loving Jesus through whom we can have forgiveness and redemption, through crying out and fear. Revival teaching that got perverted into not including the fact that being born anew does not end the reformation of character but is the beginning . Wesley knew born again believers needed to be disciplined and reshaped into Christian born again values and inner heart transformation. Those followers became known as Methodists because they insisted on a strict program for sanctification.
We are called to “work out (cultivate, carry out to the goal, and fully complete) your own salvation with reverence and awe and trembling (self-distrust, with serious caution, tenderness of conscience, watchfulness against temptation, timidly shrinking from whatever might offend God and discredit the name of Christ).“ Philippians 2:12 Amplified Bible The teaching makes an idol of the salvation experience. We are positionally changed but still have the work of “3 Then he said to them all: “Whoever wants to be my disciple must deny themselves and take up their cross daily and follow me. ““ Luke 9:23 (NIV)
So the warning in Hebrew “12 See to it, brothers and sisters, that none of you has a sinful, unbelieving heart that turns away from the living God. Heb3:12 (NIV). We must be looking at our heart with Jesus’ help because although we may know it there are many times the lies in our hearts are hidden so deep and begun in our early life that they are in the subconscious. Also the Bible tells us the heart is deceitful so only Jesus with our honest request will reveal the heart to us, but gently and lovingly forgive a repentant heart. So the work of repenting and forgiving (God of us) and us of others and ourselves is the beginning of working out our transformed heart.