Will you please explain what the difference between 'spiritual death' and 'not spiritually alive' is? Reference to Ephesians 2:5 would be appreciated.
Sure.
Scripture presents natural man "not spiritually alive", i.e., dead. Dead is a state of not being alive.
However, what was being claimed was that this state of being spiritually dead must mean that at one time we were spiritually alive. This is not how Scripture handles the topic. Scripture tells us there is "of the flesh" and "of the spirit". Not "of the spirit/flesh" died spiritually to be "of the flesh" and then will be born again "of the spirit" and fixed in that state.
Ephesians 2:1-7
And you were dead in your trespasses and sins, in which you formerly walked according to the course of this world, according to the prince of the power of the air, of the spirit that is now working in the sons of disobedience. Among them we too all formerly lived in the lusts of our flesh, indulging the desires of the flesh and of the mind, and were by nature children of wrath, even as the rest. But God, being rich in mercy, because of His great love with which He loved us, even when we were dead in our transgressions, made us alive together with Christ (by grace you have been saved), and raised us up with Him, and seated us with Him in the heavenly
places in Christ Jesus, so that in the ages to come He might show the surpassing riches of His grace in kindness toward us in Christ Jesus.
We (you and I) were dead in our trespasses and sins. We (you and I) lived in the lusts of our flesh, indulging the desires of the flesh and of the mind. We (you and I) were by nature children of wrath.
But because of God's great love with which He loved us (reminds us of Deuteronomy 7, doesn't it) even when we were dead in our transgressions (living in the lusts of our flesh, indulging the desires of the flesh and of the mind, by nature children of wrath) God made us alive together with Christ and raised us up with Him and seated us with Him in the heavenly places in Christ Jesus.
Are you suggesting that that verse implies there was a mutable state of "spiritual life" outside of Christ?
Or are you suggesting that the passage implies that man was spiritually alive and then died and can be made spiritually alive again in Christ (for good this time)?