The heart is more treacherous than anything else and is desperate. who can know it?

Beloved I found a study that I want to share with you, I firmly stated that I did not write it, I found it studying the word and I wanted to share it because there is very clear what this important verse talks about.
DECEIVING AND PERVERSE IS THE HEART OF MAN.
It says the word of God in Jeremiah 17: 9: 9 Nothing is as deceptive as the heart. Has no cure. Who can understand it? In Mat 15:18 it says; But what comes out of the mouth, from the heart comes out; and this contaminates man. Prov. 23: 7 For what is his thought in his heart, such is he.
e are what we think and act what we think. Someone once said if you want to change your results, change your actions, if you want to change your actions change your thoughts and if you want to change your thoughts save your heart. Nothing can come out without first entering. When the proverb tells us to keep your heart, it is telling us to take care of what goes into your heart, take care that the wrong thoughts do not enter. Sometimes we have become accustomed or surrendered to thoughts that are not the thoughts that come from God. It says the word in Filp 4: 8 Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there is any virtue, if there is something worthy of praise, in this think. Beloved and beloved, We can not prevent birds from flying above our heads, but if we can prevent them from nesting ...We can not prevent the wrong thoughts from touching the door of our heart but we can avoid opening the door. In the Bible we have always found a call to Examine our Heart. Why? The Word establishes it, says the Heart is deceitful and perverse. If the Bible says it, there is no where to grab it, it is like that it is "Deceptive and perverse." We could ask ourselves, What is the Heart?
Secularly we say that the heart is the main organ of the cardiac system and one of the most important of the human being. It is a muscular organ, responsible for receiving and pumping the blood so that it circulates throughout the body. Biblically, it is said of the word Heart, which is the term used figuratively to designate the center, the totality or Essence of all things or Activities. In particular, it refers to the personality of Man.
The New Testament gives a psychological and spiritual explanation, more detailed than that of the Old Testament, it says that it is the seat or source of feelings, desires, hopes, motives, Will and intellectual perceptions. It means that the intention of Man is bad by Nature. It says: "DECEIVING and PERVERSE" Deceptive = liar. Perverse = Corrupt and Bad. Always our Heart, our desires, our motives will drive us to lead a life of lies and corruption. We are always going to try to Corrupt ourselves. Because that is our Nature. It says the word in Proverbs 4:23: On everything kept, we keep our hearts because of life mana.