spirit soul and body

It's funny how some things we think we know it, we do not know it as we ought to know it. This used to be a verse quoted by one of my lecturers. He called it "the humbling verse."
Now I am wondering whether what we learnt from the pentecostal-charismatic tradition about differentiating these three areas are still relevant, or are they limiting the Lord's work in our lives. Have we understood these areas correctly to be effective partners with the Lord?