Romans 8:38-39 And I am convinced that nothing can ever separate us from God’s love. Neither death nor life, neither angels nor demons, neither our fears for today nor our worries about tomorrow—not even the powers of hell can separate us from God’s love. No power in the sky above or in the earth below—indeed, nothing in all creation will ever be able to separate us from the love of God that is revealed in Christ Jesus our Lord.
Paul's testimony of his inseperable relationship with the Lord is so amazing, we will all want to stand with the same testimony by the end of this life. But the difficult part is we get distracted and we walk into the sins and the stand in front of God with repentence and as God not to take away His Holy Spirit from us like King David.
As long as we are on this earth we will be tempted and tested by sins. We with our own strength may or may not be able to resist the temptations and might give up. Like how Adam and Eve could not resist the temptation by the Devil. But Jesus Christ during His encounter with the devil showed us how to resist the devil and fight them. Before we were saved we were so naive as Adam and Eve, that we did not know how to resist or fight the devil, we just trusted him to be true and did not have the wisdom to discern his messengers and understand his plots, he kept exploiting us and making us weaker and weaker and keeping us the slaves because of our sins.
But when we got saved, we accept Christ to be our savior and we receive His Holy Spirit, which comes with the authority and wisdom to discern and resist the devil and his schemes. But the interesting thing is devil also uses his schemes and he makes things more complex and difficult for us to discern and resist. Which inturn makes us to be more and more closer to the Holy Spirit who makes us to be much more united and inseperable from the Lord. The more we fight the devil the more inseperable we become from the Lord.
This resistance to the devil continues till we fight him in the death and chose everlasting life in Jesus Christ. He tries to lead us to failures, sins, pains, sufferings, and finally he says give up every pain and embrace death. But we as children of God resist hin and declare the victory of Jesus over death on the cross, and choose the everlasting life of His righteousness. Like Paul we declare our faith boldly by saying "Nothing can separate me from the love of God"