I enjoyed discovering this in my dad's Isaiah commentary today, reflecting on Isa 31-32.
Jonathan Edwards explained how the human being makes contact with reality. We know things at two levels. We grasp things with conceptual knowledge in our heads. We also enter into things with the sense of the heart. It’s the difference between reading a recipe for apple pie and actually putting a piece of hot apple pie a la mode into your mouth. God has made us to know him at both levels – with the thoughts of our minds and with a sense in our hearts. And it’s the sense of the heart that gives us traction. When his assurances in the gospel melt into our hearts, we experience the power of hope.
--God Saves Sinners, p. 180