What does Romans 8:39 mean?

This verse continues to list everything, every realm, and every category which anyone might imagine could loosen God's commitment or ability to love those of us in Christ (Romans 3:23–26; John 3:16–18). Nothing can. Hardships might test us (Hebrews 12:3–11), and persecution may fall on us (John 16:33). We will sometimes fail to obey (1 John 1:9–10). But Paul's explanation thus far has included everything from our experiences, to powerful forces, and even the natural and supernatural worlds. He has listed the present and future. He has listed powers, meaning perhaps hostile governments.

Now, he lists height and depth, meaning anything that might come down from above or up from below. Finally, he throws in an all-inclusive mention of anything else in all creation. Paul is being an absolutist about this. Nothing will ever be able to separate those of us who are in Christ from the love of God in Christ Jesus our Lord. Those who are saved, through faith in Christ, are saved eternally and forever (John 10:28–29). Period.

We are loved by God always. No matter what. Forever.