Hi and read 1 Cor 12:3 and it has 4 verb tenses that explain that Paul had HOLY SPIRIT POWER !!
I could explain but PENTECOSTALS will not understand , do they ??
What that verse is referring to is to how that Body members who view/call other Body members accursed would basically be saying that Jesus is accursed - because all are members of His Body.
That if such have the Spirit (1st class conditional) meaning all did have the Spirit, then none of them had any business calling the Lord LORD in one breath, only to call Him accursed with their next breath, by their calling one another accursed and or their neglect of one another over one difference or another.
The balance of the chapter then breaks all that down, as elswhere in the Epistle - how that they are all one, but were not discerning the Lord's Body in one another, but were instead allowing themselves to be led by their own, fleshly viewpoint and its emotions.
They'd replaced one emotion based idol, with another...