Therefore,, it appears (me expressing the weakness of my grey matter and ensuring that I understand you correctly) that you are insinuating that Paul's description of the Supremacy of Jesus Christ and how it binds to His work on the Cross, which MUST not be emptied of it's effect... has no regard to doctrine?
Not sure what you mean by "how Christ's supremacy binds to his work on the cross."
The doctrine presented therein is that
his
supremacy lies in
his being the image of God,
firstborn over all creation,
creator of all things, in heaven and on earth, visible and invisible, whether thrones or powers or rulers or authorities (angelic heirarchies of false teaching),
all things created
by him and
for him,
his being before all things,
all things holding together in him,
head of the the body, the church,
the beginning and the firstborn from among the dead, so that
in everything he has the supremacy.
God's fullness dwells in him,
through him God reconciles all things, whether things on earth or things in heaven
by making peace through his blood shed on the cross (
Eph 2:14-16).
You also seem to dismiss that Paul is reasserting his Gospel warnings to keep it intact.
Unless he is warning of false teaching.
You do understand that Paul uses the analogy of a prostitute, just as proverbs does, to highlight bad doctrine? He is perpetually warning the churches to maintain the simplicity of the gospel. Do I need to do an OP on that?
Prostitute in Colossians?