When the Bible refers to a person’s heart, it is not just talking about the muscular organ in our bodies that pumps blood. Kardia is the Greek word for heart and refers to a person’s whole being. In a biblical sense, giving God our heart means allowing God to work in the most private and protected areas of our lives. It also means surrendering to God our honest and raw emotions, both the positive and negative feelings, but also the deeper ones like passion and longing. Ultimately, to trust God with our innermost emotions is to give God the whole of our being.