I've read in other posts how you have a primary focus on the heart. I've also supplied you with quite a bit of detail on how the heart is spoken of in Scripture and how it overlaps extensively with the mind and thinking. I don't recall any answer from you after I supplied that information.
Yes, God gives man a new heart and for a reason clearly given in Ez36. Do you think that reason says so man can have Faith in what God reveals?
The topic we were discussing is Faith and whether or not fallen man has the faulty that can have Faith in God and what He reveals. It looks to me like you are not prepared to answer several questions about men having Faith throughout history and to respond to an explanation of Faith at work in man that simply requires the content from God to have Faith in.
The heart is the wellspring of life. It directs thought, speech, and actions. If it corrupt, so is every thought, word and action.
I want to be clear here. This doesn't mean every thought, word or action is wrong or evil. But it does mean that every thought, word, and action flows from an evil source.
I also want to be clear that evil as defined by God doesn't mean wicked or dastardly, though these are found in man and are included in the spectrum of evil. What makes that which flows from the heart evil is that it has no connection to God as its source.
Consider for a moment how God created us physically. We need oxygen at least every 3 minutes or we die. We need water every 3 days or we die. We need food every 30 days. Physically, we are dependent on God for these things continually or we die. If it's true that the unseen things of God are known by the things that are seen, what might the separation of man from God mean spiritually? How might the heart of man that was designed to be sustained and nurtured by God be altered when God is no longer its source? How might man's thoughts, words, and actions be altered? And what might be required in man for this to be restored to man?