Romans 8:38-39, I am sure that neither death nor life, nor angels nor rulers, nor things present nor things to come, nor powers, nor height nor depth, nor anything else in all creation, will be able to separate us from the love of God in Christ Jesus our Lord.
Who is Paul writing to here? Not pagan unbelievers, thus dismantling universalism. Paul is writing to Christians, particularly those in Rome at the time this was written. He wanted these Gentile Christians to be absolutely certain of their salvation in Christ. Thus, this is also true for us today. There is nothing and no one in Heaven or on this earth who can take our salvation away from Christ! Not even death itself! Nothing in this life is powerful enough to overcome God and steal our salvation. No demon, nor Lucifer himself. Not the government, even when it inflicts policies and laws against God’s people. No criminal, even if he takes our life. Not even the atheist, who makes it his life’s mission to insult us and revile us and try to persuade us God doesn’t exist, can change our salvific state in Christ Jesus (see also Matthew 11:28-30). If we renounce Him, that is another thing, but no person or power in all of creation can directly snatch us out of Christ’s grasp (John 10:27-30).