The fact is Calvinists are institutionally incapable of reading the bible properly. They want to fit all situations and all theology into a tight, narrow system that is easily understandable and leaves no room for doubt or uncertainly. This enterprise is doomed. God isn't like that.
Ephesians is written largely to ex-pagans whose minds did formerly have a substantial degree of enmity to God,
Ephesians 2
11Therefore remember that formerly you, the Gentiles in the flesh, who are called "Uncircumcision " by the so-called "Circumcision," which is performed in the flesh by human hands-- 12remember that you were at that time separate from Christ,
excluded from the commonwealth of Israel, and
strangers to the covenants of promise,
having no hope and without God in the world.
looks a little more serious than having a "a substantial degree of enmity to God".
it says excluded and without hope.
it also says:
13But now in Christ Jesus you who formerly were far off
have been brought near by the blood of Christ
but Romans was written largely to Jews who understood what the law was from birth and whose knew what good was, although they were powerless to do it under the law. Calvinism is just inadequate and a brutal method of dealing with spiritual issues.
what's the difference then? there isn't one.
Romans 3:9
What shall we conclude then? Do we have any advantage?
Not at all! For we have already made the charge that Jews and Gentiles alike are all under the power of sin.