18 January 2026
St. Athanasius
Lutheran Church
The Confession of Saint Peter Vienna, VA
“What Does This Mean?”
Text: Mark
8:27-35; 2 Peter 1:1-15; Acts 4:8-13
Grace, mercy, and peace to you from God our Father,
and from our Lord and Saviour Jesus Christ. Amen.
I think Peter was excited. He knew the answer!
Other people were saying all kinds of things about Jesus, but Peter knew who He
was. So when Jesus then asks, But who do you say that I am?
Peter jumps right in. I don’t think it’s that the others didn’t know. I
don’t think they were all standing around, looking at each other, trying not to
make eye contact with Jesus so He wouldn’t call on them! I think they knew,
too. But Peter . . . well, is Peter! So He jumps right in before the others can
open their mouths. He answers for them all: You are the Christ.
But while it’s one thing to know the answer, it’s
quite another to know what it means. And Peter didn’t know what it meant
for Jesus to be the Christ. Because when Jesus starts teaching them,
catechizing them about this, Peter takes Jesus aside and, Mark tells us, begins
to rebuke Him. And Matthew, in his account, adds a few details to that,
that Peter said: No, Jesus! You’re wrong. That’s not what it means. That’s
never going to happen to you!
Pretty bold! To say something like that to Jesus.
So Jesus is just as forceful back. “Get behind me, Satan!” He says to Peter. “For
you are not setting your mind on the things of God, but on the things of man.”
Jesus calls Peter satan because this is the same
thing satan did in the Garden with Adam and Eve. He
told them, No! You’re wrong. Got didn’t say that about this tree! That’s not
what that means . . . Except He did say that, and meant it. Adam and Eve
found that out the hard way.
What does this mean? That’s the question of the
Catechism. The question for
catechumens to first ask their teacher, and then for their teacher to ask them.
So that they can say the same thing. So they can confess. For that’s
what the word confess actually means: to say the same thing. Why
do we say that we confess our sins? Because God’s Word calls us
sinners, and we say the same thing: Yes, I am a sinner. Why do we say
that we confess the Creed? Because God’s Word tells us who God
is, and we say the same thing: Yes, I believe in God the Father, Son,
and Holy Spirit. God speaks, we listen, and we repeat it back to Him. And not
just the answer itself, but What does this mean? It’s important to know
what we are confessing.
So Peter is in many ways a typical catechumen. He
thought he knew. And he did, on one level. But he really didn’t. And many
catechumens today are the same. I know this stuff, Pastor! You don’t have to
teach me! But then ask them: What does this mean? . . . and, well,
uh . . .
That’s why we have catechesis. And why Jesus
catechized His disciples that day on the way to Caesarea Philippi. They knew
who He was. That’s great. Step one. But only step one. They needed to
know: What does this mean? What does it mean that Jesus is the Christ?
And this is what it means: that the Son of
Man must suffer many things and be rejected by the elders and the chief priests
and the scribes and be killed, and after three days rise again. And
Jesus said this plainly, Mark tell us. No figures of speech.
Nothing to interpret. Nothing uncertain. Just the facts. The Jewish leaders are
going to kill Him. But He will rise from the dead.
Perhaps it was the directness that got Peter. The
definiteness, the clarity. Because we sinful human beings tend to like wiggle
room. We like when things are open to interpretation, even negotiation. I’m
not wrong, just different. You do you. To each his own. But no wiggle room here
with Jesus. So Peter takes Him aside . . . Surely, it doesn’t have to be
that way, Jesus! Couldn’t there be another way? Why so firm Jesus? Can’t we
talk about it?
Because we think wiggle room is good.
Options are good. Flexibility is good. But the truth is exactly the opposite.
When things are definite, when you know for sure, you have security, you have
confidence. This is right, this is wrong, this is good, this is bad. I know
what to do, what to pursue. I know what not to do, what to avoid. But
when things are unclear, squishy, open, then I don’t know and can’t be sure.
There’s doubt. And I know for me, and I suspect for you, too, even when I’m
trying my best and think I’m doing the right thing, I often mess up and make
wrong decisions! And if that’s true with the things in my life, do I
really want that with my eternal life? Uncertain, unsure, up to me?
So while Get behind me satan!
sounds harsh, it is far better than the alternative, which is what satan said in the Garden: Did God really say?
So here is Jesus being firm, taking charge, and protecting Peter from
himself. Just as He would protect and save Peter with His sure and
certain death on the cross. No wiggle room. This must be so it will
be. Truth. Solid. Sure. Even if my sinful nature doesn’t like it. I need it. To
know the truth and what it means. To know Jesus came for this, for
me. And will not change His mind.
That’s what it means to be the Christ. He must
suffer many things and be rejected and crucified FOR YOU. For the
forgiveness of your sins. To forge a way through death to life in His
resurrection. For the wages of sin is death. That’s what you
earned and He paid. And the free gift of God is resurrection
and eternal life in Christ Jesus our Lord (Romans 6:23). That’s what He earned and
gave you in His love. For God so loved the world . . .
So you are the Christ. Quite
right, Peter! Bravo! What does this mean? That (pointing to the
crucifix). And from that (crucifix), that (pointing to the Font).
And from that (Font), that (pointing to the altar). For no cross,
no Font, no Baptism, no dying and rising with Christ to a new life. And no
cross, no altar, no Supper, no forgiveness and life-giving Body and Blood of
Christ.
So yes, Peter, yes Christian, the Christ MUST
suffer and die. That is the only way He can be the Christ, the Saviour of the world. The only way He can be MY Saviour. There is no other way to eternal life. No wiggle
room here. Just the truth and what it means.
But Jesus’ catechesis didn’t end there. To confess
that Jesus is the Christ means this, too: If anyone would
come after me, let him deny himself and take up his cross and follow me.
For whoever would save his life will lose it, but whoever loses his life for my
sake and the gospel’s will save it. And again notice: no
wiggle room there. This is how it is. Not only will Jesus die on a
cross. There will be the cross in the life of a believer.
Now, I can already hear the gears in your heads
turning about this, trying to create some wiggle room! What cross? When?
How? Can I choose my cross? What if it’s too heavy for me to bear? Can I
switch? Surely, Jesus didn’t mean I have to lose my life! He wants me to
be happy, doesn’t He? Doesn’t He?
Well, sure Jesus wants you to be happy. But
happy with what? With the sin you think makes you happy, but is really
hurting you and eating away at your life and relationships? Or a happiness that
will last and is true, and instead of eating away at you, gives you life and enlarges your life?
So just as with Peter, while Jesus rebuking Peter
and calling him satan sounded harsh but was
actually Jesus protecting Peter from himself, so too here with the cross
in your life. It sounds harsh. It sounds hard. And maybe it is. But it
is Jesus protecting you from yourself. It is Jesus loving you. And there
is no wiggle room with Him and His love. He loves you with a love that is sure,
solid, unshakable, and absolute. And so in love, Jesus took up His cross to
defeat sin, satan, death, and hell, and in love, He
gives you the cross for the same reason. That satan
and his lies not take root in your hearts and lives. That the old sinner
in you be crucified with Christ, that the new man, the Christian, live. You can
hang onto your old, sinful ways and life if you want, but in the end you’ll
find out that what you thought was saving, what you thought was winning, was
really losing. But if those old sinful ways and life are crucified with Christ,
you may think you’re losing - like it looked for Jesus on the cross! But
you’ll find that is really the way to victory and eternal life.
And it is the way to true happiness.
Enjoy the things of this world and life, yes. They’re good and created by God
for us to enjoy. But even more than that, God wants you to live not just in
this world, for a while, but with Him, forever. To become, as Peter wrote in
his epistle that we heard today, a partaker of the divine nature.
The divine nature that in love became man to bear the cross for you, and that
you, as a partaker of the divine nature, in that same love, now
bear for others. That you look at the challenges and difficulties in your life not
as things to avoid and get away from, but times and places to bring Christ and
His love. Times and places to pray, confess, and forgive. Times and places to
learn and grow in the Word and in faith and in good works. For catechesis isn’t
just words. It is Jesus teaching us and forming us in our lives and
deeds as well.
And notice how that change took place in Peter.
From rebuker of Jesus in the Holy Gospel, to bold confessor in the first
reading we heard, boldly proclaiming that there is salvation in no one
else, for there is no other name under heaven given among men by which we must
be saved. Good for you, Peter! No wiggle room! Definite. Absolute.
Steadfast truth. And those who heard him were astonished . . . and recognized
that they had been with Jesus.
I pray the same be true for you. That because of your
words and deeds, others recognize that you have been with Jesus. That others
see Jesus in you. For to confess that Jesus is the Christ is to
confess that the very Son of God has come to be with us in the mess we make of
this world and our lives. That no how messy your life gets, or your family
gets, or this world gets, or even our church gets, God in the flesh is here
with us. Really and truly. He is here with forgiveness and life, here with His
Body and Blood, for you. You are not alone and don’t have to go it
alone.
But along with that, like Peter, you bring the
Jesus who is with you to others. Bringing His love and forgiveness and life
into a messy and messed up world. And boldly sure about it! Confessing a truth
that is not squishy and unsure, but certain and absolute. As certain and
absolute as Jesus’ empty tomb. No wiggle room. Just the truth. So that while
today, just as in Jesus’ day, that may not be popular, and there are people all
around us saying all kinds of things about Jesus and His teaching, about what
is truth and the way to eternal life, we confess with Peter not only with our
mouths and words, but with our deeds of love and forgiveness: You are the
Christ. And both know in our hearts and show in our lives exactly
what that means.
In the Name of the Father, and of the (+) Son, and
of the Holy Spirit. Amen.
Now the peace of God which passes all understanding, keep your hearts and minds through faith in Christ Jesus, our Lord. Amen.