Who shall separate us from the love of Christ? Shall trouble or hardship or persecution or famine or nakedness or danger or sword? As it is written: ‘For you sake we face death all day long; we are considered as sheep to be slaughtered.’ No, in all these things we are more than conquerors through him who loved us. For I am convinced that neither death nor life, neither angels nor demons, neither the present nor the future, nor any powers, neither height nor depth, nor anything else in all creation will be able to separate us from the love of God that is in Christ Jesus our Lord.
Again, the promise and security presented in this passage of Scripture is only for believers (“us” in verse 35). None of these things are true of unbelievers and nothing in the passage suggests that faith cannot be abandoned or that love for God cannot grow cold (Matt. 24:12). This passage gives assurance to believers who are suffering persecution that such sufferings should not be interpreted as indicating that God no longer favors them or loves them. No amount of persecution or opposition can overwhelm the believer since the believer always has the victory in Christ. Neither the turmoil of this life nor death itself can separate the believer from Christ’s love. Through Him and because of Him we are more than conquerors despite any obstacle or battle that we may encounter. However, just as in John 10:27-29 there is nothing in the passage to suggest that God’s saving love is unconditional or that believers cannot separate themselves from the love of Christ by abandoning Him during trials and persecutions. The one who remains will certainly triumph but there is no such promise of victory for the one who shrinks back in unbelief (Hebrews 10:38; Matt 10:22, 28, 32, 33). Indeed, the Scriptures admonish believers to remain in God’s love (Jude 21) and Christ’s love (Jn. 15:9). If the promise of Romans 8:35 was unconditional then such passages as Jude 21 and John 15:9 would be rendered nonsensical. Forlines observes:
It is my opinion that this passage does not deal with the question of whether a saved person can ever be lost again. Rather, it teaches that a person who is a child of God can never, at the same time, be separated from God’s love. In other words, the believer is never to interpret hardships as meaning that God does not love him. Instead, he should recognize that God’s love is still with him and should say with Paul, ‘Nay, in all these things we are more than conquerors through him that loved us’ (Rom. 8:37)…Suppose the passage does deal with the matter of security. It would be explained the same way as the statement of Jesus when He said, ‘Neither shall any man pluck them out of my hand’ (John 10:28). Paul would be saying as emphatically as human language can make it that our personal salvation is a matter between the individual and God. He would be saying that neither tribulation, distress, persecution, famine, peril, sword (verse 35), death, life, angels, principalities, powers, things present, things to come (verse 38), height, depth, nor any other creature viewed collectively or singularly can take a believer away from Christ. I believe that. What Paul says in these verses in no way contradicts the viewpoint that if a believer turns away from God in defiant, arrogant, unbelief that God will take him out of Christ (Jn. 15:2, 6). (ibid.)
Some believe that verse 39 gives just such an unconditional promise, “…nor anything else in all creation [or "any other created thing"], will be able to separate us from the love of God that is in Christ Jesus our Lord.” They reason that since the believer is a “created thing” then it follows that even the believer cannot remove himself from God’s love. This appeal is problematic on many fronts.
First, it ignores the context of the passage which is dealing with persecutions and tribulations that are brought to bear on the believer (forces, circumstances, and influences outside of the believer). Verse 39 is still speaking about these things and therefore cannot have reference to the believer himself. Indeed, this seems like a very awkward and unnatural reading of the text and I am fairly confident that one would never think to read it that way if they weren’t driven by a prior commitment to unconditional security, and trying to find support for the doctrine in this passage. Grant Osborne captures this truth well when he writes, “Outside pressures can’t separate us from Christ’s love, but inward apostasy can (Grace Unlimited, pg. 179).
Second, the suggestion that the believer cannot separate himself from the love of God stands in contradiction to passages like Jude 21 and John 15:9 as noted above. Third, while there is a sense in which the believer can separate himself from the love of God in Christ by abandoning the faith, it needs to be remembered that according to Scripture the believer does not ultimately separate Himself from Christ (the sphere of God’s special and saving love) as Forlines pointed out above. When a believer abandons the faith and becomes an unbeliever God Himself separates that person (now an unbeliever) from His Son (Jn. 15:2, 6), and God is not a “created thing.”