Tuesday of the Sixth Week in Ordinary Time

The Leaven That Shapes the Heart.

What strikes me about this Gospel is how ordinary it is. The disciples are in the boat with Jesus, and they’re worried because they forgot the bread. They have one loaf, and it doesn’t feel like enough. That’s almost hard to believe, because these are the same men who have just watched Jesus feed thousands—not once, but twice. They’ve seen abundance where there was almost nothing, and yet here they are again, counting what they lack. Jesus knows exactly what’s going on. He doesn’t argue with them about the bread. Instead, he gives them a warning: “Watch out for the leaven of the Pharisees and the leaven of Herod.” Leaven is just yeast, and the thing about yeast is that it works quietly. You don’t need a lot—just a little bit changes everything. Jesus isn’t talking about bread anymore; he’s talking about influence, about what quietly forms the heart over time. The leaven of the Pharisees is a religious mindset that looks faithful on the outside but slowly hardens the heart, reminding us how easy it is to slip into self-reliance, into thinking we already know, already understand, already have God figured out. The leaven of Herod is different but just as subtle—a way of living shaped by fear, comfort, and compromise, where truth takes a back seat to what feels safer or easier. Neither of these shows up loudly. They creep in slowly, and before we realize it, they affect how we see everything.

That’s what’s happening in the boat. The disciples aren’t sinful or rebellious; they’re just distracted, focused on what they don’t have instead of remembering who is sitting right there with them. And for those of us who come to Mass day after day, this Gospel is especially close to home, because faithfulness doesn’t always struggle with disbelief—sometimes it struggles with forgetfulness, with routine, with quiet discouragement, with the temptation to focus on the same worry again instead of remembering how many times the Lord has already provided. As John Chrysostom once said, it is not enough to remember what God has done; we must learn to understand what he is doing now. The disciples remember the miracles, but they don’t connect them to the present moment. They remember the bread, but they miss the deeper lesson. And Jesus asks them—gently but directly—“Do you still not understand?” It’s not a question of disappointment; it’s an invitation. An invitation to trust more deeply, to notice what is shaping the heart, and to resist the slow leaven of fear, pride, or spiritual dullness. That invitation comes to us today, because Christ is still in the boat with us—still present, still providing, often in quiet, ordinary ways. And in just a few moments, he will feed us again, not because we have everything together or because we brought enough, but because he is faithful. So maybe the prayer this morning is simple: Lord, help me remember. Help me see what you are already doing. And guard my heart from anything that quietly pulls me away from trust.