There is a deeper meaning to this then perhaps we would like to consider. Satan can not take away the salvation that we have by grace through faith in the cross of Christ as a born again believer, but he can strategize to get us to grieve the Spirit and get involved with works that are absent the love of God and our first love. If Satan is successful in getting us to give place to him and his strategies, that will grieve the Spirit and the love of God in us and make it inoperative. When that love is inoperative we will no longer be motivated to do the good works that we have been given to do at the first when we were saved by grace.
Faith always works by love and Satan's plan is to quench that love to make us unfruitful in every good work. If we continue to give place we will eventually have no desire for the things of God because the love of God was made inoperative in us and our faith became as dead instead of being alive unto God. This is the process that operates in the heart of the believer to get them to depart from the faith that works by love because the love of God no longer is operative or actively being shed abroad in their hearts by the Holy Spirit. They are born again being saved by grace but are unfruitful in their works and though they have the faith of the Son of God, it is dead (dormant or lifeless) with no fruitful works of love.
The church at Ephesus had this problem and Jesus addressed it in (Rev 2). Here is the what the Amplified Version says in (Rev 2:2-5)...
2 I know your industry and activities, laborious toil and trouble, and your patient endurance, and how you cannot tolerate wicked [men] and have tested and critically appraised those who call [themselves] apostles (special messengers of Christ) and yet are not, and have found them to be impostors and liars.
3 I know you are enduring patiently and are bearing up for My name’s sake, and you have not fainted or become exhausted or grown weary.
4 But I have this [one charge to make] against you: that you have left (abandoned) the love that you had at first [you have deserted Me, your first love].
5 Remember then from what heights you have fallen. Repent (change the inner man to meet God’s will) and do the works you did previously [when first you knew the Lord], or else I will visit you and remove your lampstand from its place, unless you change your mind and repent.