Well, when it comes down to the heart.....it concerns choices that are worth fighting for and dying for. When the heart makes a decision, it is all in - no wavering- fully committed.
Even if God slays me, yet will I trust Him because my heart made the decision- NOT my head (mind).
My heart listens to the choices given and makes a decision. Our hearts need to love the Truth. We can know Truth but, we need to love Truth.