Ok, I can't find the post, but the poster who is having a problem with thinking that the Holy Ghost (Spirit) could the Satan, the Devil...
Any real truth seeker is going to be confronted by thoughts of Jesus maybe being Satan, or the Holy Ghost, or even YHWH or the Father God, being Satan, that is because Satan is allowed to "suggest" these thoughts to truth seekers, and he desperately wants one of those positions. I've confronted them/him, on these and dealt with them...
One way I denyied and shot down these, is by saying back to the one making the suggestion, that Jesus is not a liar, and YHWH is not, and never has been a liar, and the Holy Spirit, is called, the Holy Spirit of "truth" and scripture says, is not a liar (and I said to him, "It is written") Anyway, it is written, Satan, and is true, that you are are a liar and manslayer, from the beginning, (that is: You were created that way) (he had a few things to try and say about this point as well) and the "truth" is not, never has been, and never will be "in you" or ever a part of you or ever will be in your nature... your very nature is always going to be against truth, and you try to present a false truth to many...
And, I used another scripture also, but can't recall it right now, as I forget what else he tried to say or suggest to me, and how I shot it/that/those down as well (with help of course), but, he is liar and is incapable of change, and he is, nor can, nor ever will be, even remotely associated with real truth...
So, he is not any member of the triune God of truth...
Satan is a liar, and always will be, for he was created that way and is incapable of change, and God is not, nor ever will be (a Liar like him)...
God Bless!