The Bible clearly states that nothing can separate the saved from the Love of Christ as Romans 8:37-39 clearly states:
"37 No, in all these things we are more than conquerors through him who loved us. 38 For I am sure that neither death nor life, nor angels nor rulers, nor things present nor things to come, nor powers, 39 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."
But some people who have rejected the doctrine of perseverance of the saints have said that this passage does not mention the fact that we can separate ourselves from the love of Christ Jesus by our actions whether it be by sin or free will. However, it seems that Romans 8:37-39 does teach that even a believers sin and free will cannot separate them from the love of Jesus Christ as the following argument demonstrates:
Premise 1: Anything that is creation cannot separate us from the love of Christ
Premise 2: Believers are a part of creation
Conclusion: Therefore, Believers cannot separate themselves from the love of Christ
Premise 1 is supported by verse 39 that tells us that nothing in creation can separate us from the love of Jesus Christ. From premise 1 the rest of the argument logically follows and so from Romans 8 we can derive the teaching that nothing can separate those who are saved from the love of Jesus Christ. Another interesting thing we can infer from Romans 8:1 is that there is no condemnation for those who are in Christ Jesus. So we find out a beautiful combination of truths from Romans 8 that those who are in Christ Jesus cannot ever be separated from his love nor be condemned. This is surely a comforting truth for all believers in Christ Jesus.