What does it mean to have a heart of flesh according to the Bible?

In Ezekiel 36:26, God promises to remove our heart of stone and give us a heart of flesh, symbolizing spiritual regeneration and renewal. This new heart is characterized by sensitivity to God's will and an eagerness to obey Him. Unlike a heart of stone, which is unyielding and resistant, a heart of flesh can feel, respond, and be molded by the Holy Spirit. This transformation is essential for believers because it enables them to desire what pleases God, realize their sinful nature, and rely on His grace. Thus, having a heart of flesh signifies the ongoing work of the Holy Spirit in a believer's life, transforming them to reflect Christ's image.