Addiction is in the flesh so it is the same in both believers and unbelievers
This third part can only apply to born again believers because unbelievers cannot have the indwelling of the Holy Spirit.
As far as doing hardcore drugs with the indwelling of the Holy Spirit....I can only suggest that drugs distorts our ability to rightly divide the truth....it is a doorway, a portal to deceiving spirits and seducing spirits. So if you think about it when we sin we grieve the Holy Spirit, but He never leaves us.
Romans 8:9 tells us, “…if anyone does not have the Spirit of Christ, he does not belong to Christ.” This verse very clearly states that if someone does not have the indwelling presence of the Holy Spirit, then that person is not saved. Therefore, if the Holy Spirit were to leave a believer, that person would have lost the saving relationship with Christ. Yet this is contrary to what the Bible teaches about the eternal security of Christians. Another verse that speaks to the permanence of the Holy Spirit’s indwelling presence in the life of believers is
John 14:16. Here Jesus states that the Father will give another Helper “to be with you forever.”
The fact that the Holy Spirit will never leave a believer is also seen in
Ephesians 1:13-14 where believers are said to be “sealed” with the Holy Spirit, “who is a deposit guaranteeing our inheritance until the redemption of those who are God's possession—to the praise of his glory.” The picture of being sealed with the Spirit is one of ownership and possession. God has promised eternal life to all who believe in Christ, and as a guarantee that He will keep His promise, He has sent the Holy Spirit to indwell the believer until the day of redemption. Similar to making a down payment on a car or a house, God has provided all believers with a down payment on their future relationship with Him by sending the Holy Spirit to indwell them. The fact that all believers are sealed with the Spirit is also seen in
2 Corinthians 1:22 and
Ephesians 4:3
