The Holy Spirit works continually through the elect to work God’s Will in the lives of the saved. The idea of a “carnal Christian” is nonsensical and unBiblical. At the same time those who are saved are eternally saved or else it DOES belittle Christ’s sacrifice (”Those God has given Me I will in no wise cast out.”) If we can lose or work our way to Heaven - what need of Christ? Justified ONCE, sanctified continually.
Not everyone who hears the Word of God produces/is saved.
MATTHEW 13:18-23 18”Listen then to what the parable of the sower means: 19When anyone hears the message about the kingdom and does not understand it, the evil one comes and snatches away what was sown in his heart. This is the seed sown along the path. 20The one who received the seed that fell on rocky places is the man who hears the word and at once receives it with joy. 21But since he has no root, he lasts only a short time. When trouble or persecution comes because of the word, he quickly falls away. 22The one who received the seed that fell among the thorns is the man who hears the word, but the worries of this life and the deceitfulness of wealth choke it, making it unfruitful. 23But the one who received the seed that fell on good soil is the man who hears the word and understands it. He produces a crop, yielding a hundred, sixty or thirty times what was sown.
what about the Christians at corinth, that paul writes to that have left the faith? at one time they believed. as He said, “no one can take them our of my hand”, but that does not cover them leaving Him on their own accord.