 What was going on in their heart? It was hard, their hearts were hardened. What? They just did these miracles. They left the shore and then they got to the middle of the lake in a span of a few hours and some exertion that they did, they got hard hearts and couldn't get God's truths. Friends, this, that scares me. If that happened to the disciples that fast, then oh no, we need to be on our guard. We need to be careful with our heart.