Patrick,
What comes to mind by your observation of denominational sect behavior is Pr. 23 : 7 " For as he thinketh in his heart, so is he..."
We are basically a result of all we have learned and experienced. If this sum is combined with faith, truth, knowledge and experience gained through the " school of hard knocks " of the indwelling Spirit of God. And as we agree with His word, weigh all things with wisdom and biblical rationalization, then we think( in part) with His mind, through the Spirit, basically.
Every thought and calculation and judgement and decision is factored through His word and truth brought to our remembrance through the indwelling Spirit. We are basically one of The Lord's" Judges", a son, or daughter, the image of our Father.
Of course we still think imperfectly according to our fleshly passions about things of the world we do  not  fully understand, and we sometimes are/ can get contemptuous about sin and lawlessness, which is a natural reaction. We are and will not ever be perfect until glorified in a incorruptible body.
But if we believe that because we Love Him and His word and purpose within ourselves to resist the sin that we have learned is a snare and a deception, we trust he is with us and will be for us.
Alan T