The heart is where our true self comes from. God talks about the heart many times in the scriptures. The world would say, that a certain thing a person had a heart to do it.
So what is in our hearts is what we really are. For instance a person who is easily offended and constantly grumbles about it. What is behind it all is pride ( how dare you say such a thing to me) it is how we deal with situations like this that matters to God.
So who is behind pride, Lucifer was such a beautiful angel, that his beauty got the better of him. He began to admire himself and the position he had in heaven. That turned into thinking that he could be everything that God was. So the heart of Lucifer began to be filled with pride.
Ezekiel chapter 28 verse 14. 17. You were the anointed cherub who covers and I placed you there. You were on the Holy mountain of God. You walked in the midst of the stones of fire.
Verse 17. Your heart was lifted up because of your beauty. You corrupted your wisdom by reason of you splendor. I cast you to the ground, I put you before Kings that they may see you. LASB.
There we see how God hates pride, and how we must deal with it and all of the consequences. One of the problems in churches today is just this. And it needs to be settled before we can move on into the will of God. That means becoming Christ like, on our own that is not possible. But with the help of the Holy Spirit it can be done.
Religion would have us say otherwise, we would do well to remember that is was religion that killed Christ. It will seek to stop any real moves of the Holy Spirit. We need to throw the shackles off and walk into the freedom that God has for us. In this day and age people will start looking to the church for answers. Only Spirit filled churches will do that.