Advent 2A
December 7, 2025
Matthew 3:1-12
INTRODUCTION
Traditionally the second week of Advent is known as “Peace Sunday,” and we will see that theme especially in today’s famous reading from Isaiah: the description of the Peaceable Kingdom, where the wolf lies with the lamb, and other predators live in peace with their prey, and a little child leads them. It is what we hope for and picture when those angels sing to the shepherds in the fields, “Glory to God in the highest, and on earth, peace among those whom he favors.” And that description of a peaceful kingdom was very good news for Isaiah’s audience, who were living under threat of the Assyrian army, which had already destroyed the northern kingdom of Israel and were likely heading south next, to Judah. Israel is living in a time when the people don’t trust their leaders to be faithful, and their hope is lost because the line of King David, from whom they were expecting a Messiah to come and save them all, has been cut off. But here, Isaiah promises that from the stump of David’s family tree (Jesse is David’s father), a sprout has sprung – there is yet hope!
As for the Gospel… this second Sunday of Advent we encounter John the Baptist in the wilderness and his cries for all to “repent!” John is always a centerpiece of the Advent season, as he heralds the Lord’s coming. Difficult as his message of repentance is to hear, it is a necessary one for the preparation of our hearts. Today he says so quite extremely, so, buckle up. Both the nice text from Isaiah and the difficult one from Matthew can bring peace, if we hear them with open hearts. So, let’s listen.
[READ]
Grace to you and peace from the One who is and who was and who is to come. Amen.
So what do you think: if I could somehow arrange to have John the Baptist come here as a guest preacher, how do you think he would be received? Do you think you would leave the sanctuary, shake his hand, and say, “Thanks for your sermon today, pastor!” Or maybe… leave before he was finished?
I can’t say John’s strong words would make me want to hang around and thank him! On the surface, at least, this sermon is more in the fire and brimstone preaching genre that makes me pretty uncomfortable. I don’t always need to feel good when I’m listening to a sermon, but I at least appreciate not being likened to a brood of vipers, ya know?
Yet if we dig a little deeper into this scene and John’s words, what appear on the surface to be very judgmental and accusatory words are actually words of hope and transformation (serpentine insults aside!).
First, a little biblical history. Matthew is going to great lengths here to identify John the Baptist with Elijah, the 9th century prophet who was whisked off into heaven by a chariot of fire. In Jewish belief, the return of Elijah would herald the coming of the Messiah – and with it, great hope! So when Matthew paints John as Elijah (for example, by his strange clothing of camel’s hair and a leather belt, and his location in the wilderness), he is starting us off by saying: “God is on the move! God has raised up another Elijah in the wilderness. The dawn of a new day is upon us, and we know this because Elijah (or someone like him) has returned.” It is no wonder people flocked to the wilderness to hear what John had to say! So, we’re starting from a place of hope, which helps us see the rest of John’s sermon through that hopeful lens.
Though John’s words in this text are directed at the Pharisees and Sadducees, but they are just as important for us. The meaning of that word, repentance, is not merely saying “I’m sorry,” or confessing your sins at the beginning of the liturgy each week. When John says, “Repent!” he is calling upon people to change their hearts, to turn around and reorient toward a new way of living. It is certainly possible and even reasonable to take this call to repentance personally. Someone telling you, “You need to change,” can be pretty tough to hear! But also… don’t we all already know it, know that we need a change? Is there anyone among us who is completely content with their life, their relationship with God, their prayer life, their relationships with family, friends, and colleagues? Is there anyone here who is immune to greed, self-absorption, apathy or anger?
Speaking personally, I’m fairly content – I have a job I love, a family I cherish, I live in a beautiful place and have a roof over my head and food on the table. But there are plenty of times a week or even a day when I feel unsettled, unsatisfied, or a sense of longing. Plenty of times when I long for my heart to be changed: to be more oriented toward God than toward myself, and toward radical love of neighbor. John is speaking to that: “change your heart!” he says. “God is coming near, and a new day is upon us! Out with the old ways, and in with the new! Change your heart, change your life!”
Consider for a moment, be honest: how does that message land with you? To me, it feels both hopeful (as I said, I do often long for a change, even if I can’t always pinpoint what I envision that change to be), and it also feels exhausting and a bit scary or intimidating. After all, what if the change is hard? What if it requires too much from me? Isn’t it easier just to stay the way I am, because it’s pretty good, and at least it is known? Even if the future is hopeful – what if getting there is too much?
Well, John’s response to these fears is not especially compassionate (John was not known for his bedside manner). Instead, he draws upon another image that on its surface is terrifying, but actually offers life: that of the separation of chaff and wheat. It sounds very judgmental, right? A separation of good (wheat) and bad (the chaff that will be burned). But this is referring to a farming practice wherein the husk is removed from the grain, and allowed to be blown away by the wind and burned. These husks, together, are called chaff. You see? Each grain of wheat has both grain, which is to be preserved, and chaff, which is to be discarded. We are all made up of both grain and chaff, and the goal is to save every grain, and do away with the chaff. So although we may be tempted to hear this image as a separation of good people from bad people, it is actually speaking to the wheat and the chaff within each heart. As Russian author Alexsandr Solzhenitsyn says, “The line separating good and evil passes not [between groups, or between people] – but right through every human heart.”
So John asks us in this Advent season: what is the chaff that needs to be burned, in order to prepare our hearts for our Lord’s coming? What husks are getting in the way of our ability to see and welcome God’s presence among us? Anxieties, apathy, or greed? Judgment of others? Bitterness over past wrongs? A brain that is overactive with worry? Coping habits that draw our attention away from trust in God, and toward trust in our faulty human ways?
John’s dynamic sermon on this second Sunday of Advent tells us that it doesn’t have to be that way. The coming of Christ means restoration and empowerment, hope and new life. And it also does mean peace – the peace that comes from shedding those traits and patterns that cause distress to us and our communities, that keep us from living peacefully with one another. With the chaff gone, we can heal as individuals and communities. Of course, separating the wheat from the chaff may not be an easy process. But allowing the chaff to burn away, as difficult as it may be to watch our old ways shrivel up, will bring us to new life. It will do away with all the junk that clutters our minds and hearts, and prepare room instead to receive the Lord of Love, the Prince of Peace.
Let us pray… Emmanuel, so much gets in the way of us finding peace – in our hearts and in our world. Let every heart prepare you room, so that we might get closer to your vision of living peacefully with one another. In the name of the Father and the Son and the Holy Spirit. Amen.






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