by this everyone will know: a sermon on a reading from john 13

by this everyone will know

Written by Rev. Dan King

Christ-follower. husband. father (bio and adopted). deacon and director of family ministry at st. edward's episcopal church. author of the unlikely missionary: from pew-warmer to poverty-fighter. co-author of activist faith: from him and for him. president of fistbump media, llc.

May 19, 2025

the reading

John 13:31-35

At the last supper, when Judas had gone out, Jesus said, “Now the Son of Man has been glorified, and God has been glorified in him. If God has been glorified in him, God will also glorify him in himself and will glorify him at once. Little children, I am with you only a little longer. You will look for me; and as I said to the Jews so now I say to you, ‘Where I am going, you cannot come.’ I give you a new commandment, that you love one another. Just as I have loved you, you also should love one another. By this everyone will know that you are my disciples, if you have love for one another.”

the sermon

Let me set the scene. It’s the evening of the Last Supper. They just finished their final meal together.

Jesus has instituted the sacrament of the Eucharist… “do this in remembrance of me.” 

He washed the feet of his disciples as an example of the life of humility and service they were to live. 

And Judas had just left to betray Him. 

Jesus certainly would have felt the weight of the moment. In less than 24 hours, Jesus will have died on the Cross, and His body will be resting in the grave. While everyone else is oblivious to what’s about to happen, He knows. And He knows that He needs to make these moments count.

It’s here, in the shadow of the Cross, He speaks to them about glory and love.

Our Gospel passage today is a beautiful one where Jesus speaks plainly to the people closest to him. No parables. No beating around the bush. Just straight talk. He can’t afford for them to miss any of this one.

So He’s taking this opportunity to pour out some of His last best advice to this motley crew that is about to take on the responsibility for carrying the message of the Christ and changing the world forever.

And this is what Jesus tells them:

“Love one another. Just as I have loved you.”

the commandment that isn’t really new… or is it?

This call to love one another isn’t a new one. Moses wrote statements like this one in Leviticus 19:18:

“You shall not take vengeance or bear a grudge against any of your people, but you shall love your neighbor as yourself: I am the Lord.”

Jesus even used it in response to the religious leaders of His day when asked about the greatest commandment, saying in the Summary of the Law::

“You shall love the Lord your God with all your heart, with all your soul, and with all your mind. This is the first and the great commandment. And the second is like it: You shall love your neighbor as yourself.”

What makes this new is when Jesus says, “as I have loved you.”

That begs the question… how did Jesus love?

  • He touched the untouchable… healing lepers and the unclean, people who the rest of society kept at a distance.
  • He spoke to the woman at the well with compassion and honesty without shame… leading her to freedom and purpose.
  • He offered forgiveness of sins first… often before other physical healing.
  • He fed the hungry… meeting physical needs. Love isn’t just emotional or spiritual. It shows up in bread and fish too.
  • He wept when His friend Lazarus died… sometimes love is shown in presence, solidarity, and shared pain.
  • He welcomed the marginalized… he ate with tax collectors, welcomed prostitutes, and honored outsiders. His table was wide!
  • And ultimately, He gave His life on the Cross… the ultimate act of love and redemption. He laid down His life for His friends, and His enemies.

This is a love marked by humility, service, and sacrifice. This isn’t a sentimental or surface-level love. It’s a costly, inconvenient, Christ-shaped love.

What does love like that look like among us?

st. basil’s wisdom

To answer that question, let’s take a look back… way back!

St. Basil of Caesarea, a 4th-century bishop, was a strong supporter of the Nicene Creed, and had a great deal of influence on the liturgies developed in the early church. One of his greatest contributions, however, is as a monastic, setting up monasteries near towns to help care for the sick and the poor in those areas.

This is something that we see a lot of in the early church, and is sometimes attributed as one of the reasons for the rapid growth of the church. 

Sociologist Rodney Stark shares how during epidemics in the first few centuries, it was Christians running into towns when others were fleeing. When the sick people were cared for, they survived. And it was this kind of selfless act of love that helped Christianity spread more quickly.

This kind of work was important to St. Basil. He wrote:

“A tree is known by its fruit; a man by his deeds. A good deed is never lost; he who sows courtesy reaps friendship, and he who plants kindness gathers love.”

And this is much like what Jesus is sharing with His disciples… That we should always be planting love.

Love isn’t abstract or internal. It looks like something. And it bears fruit. It’s seen by others, not just professed.

a haunting question

I was once asked a question that continues to both haunt and inspire me many years later. It’s a question that gets to the heart of what we’re talking about. It’s a question that drives almost everything we do as a church.

The question is:

“If our church closed its doors tomorrow, would our community even notice?” 

(awkward pause)

Listen, this question isn’t about shame or pointing out faults or blaming anyone for missed opportunities. In fact, there are so many things here in our church that we are doing well! 

I think about the preschool… I know adults who took their kids there because that’s where they went when they were kids. What an incredible opportunity to be a light and a blessing to our community!

This question, though, is about searching our soul. What are we known for? What do we want to be known for?

In our Gospel reading today, Jesus is saying that people will know us not by what we believe (whether we follow this doctrine or that, favor this political position or that), nor by how we worship…

But by how we love.

How are we loving one another? How are we loving our neighbor? How are we loving even our “enemy”?

Too often in church, we face the temptation to be inward-facing in our own comfortable community.

But, are we being the love Jesus commands us to be?

by this everyone will know

Honestly, I’d love to sit around and brainstorm about all of the things that we could do to be love in our community.

On a broader, church-wide scale, I even think of things like hosting community meals for people in need, supporting local school programs (like we’ve started doing with the local high school theater kids), offering childcare for “parents’ night out” for single or adoptive parents, running free laundry days where we show up and pump coins into machines for people, or running skill-sharing classes (resume writing, budgeting, cooking, or other life skills). 

We could go on and on and find lots of ways that we could show up for people in our community. But it’s not just the big things that make a difference. 

It’s all of the little things that each of us can do individually too. Sharing a meal with a lonely neighbor. Being there for someone in their grief. Welcoming someone new or different.

I believe it was Mother Teresa who said:

“We can do no great things, only small things with great love.”

Big or small, we have opportunities all around us to love like Jesus loves. The big things are amazing, but love doesn’t need to be grand in order to be seen.

The reality is that people are watching. The world is watching for people who live differently and who break through all the junk and the noise. 

And Jesus tells us that this is how they’ll know. This is how we make sure that the world sees Him.

an invitation and encouragement

So here are some questions we all should ponder:

  • Where might Jesus be inviting you to love more boldly this week?
  • Who around you needs the fruit of kindness?
  • Where can you plant the seeds of compassion?

In a few minutes, we’re going to celebrate the Eucharist. In the broken bread and poured-out wine, we receive that same love. 

During that time, our priest will pray this (in Rite 1, or a variation of it in Rite 2):

And here we offer and present unto thee, O Lord, our selves, our souls and bodies, to be a reasonable, holy, and living sacrifice unto thee; humbly beseeching thee that we, and all others who shall be partakers of this Holy Communion, may worthily receive the most precious Body and Blood of thy Son Jesus Christ, be filled with thy grace and heavenly benediction, and made one body with him, that he may dwell in us, and we in him.

And afterwards, when we pray together giving thanks for the Eucharist, we something like this:

And we humbly beseech thee, O heavenly Father, so to assist us with thy grace, that we may continue in that holy fellowship, and do all such good works as thou hast prepared for us to walk in.

And even when we leave here, the deacon dismisses us with words like:

Go in peace to love and serve the Lord.

And that’s an invitation to take everything we received in here, and to pour it out, out there. 

So may we accept every bit of love and mercy and grace and healing and redemption that Jesus offers to us. And with that, may we live out the calling He gave to His disciples to love the way He did. Let us be the church our community would miss if we weren’t here… not for our programs, but because our love made a mark on it. May we sow courtesy, plant kindness, and gather love… in His name. Amen.

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by this everyone will know: a sermon on a reading from john 13

by Rev. Dan King time to read: 9 min
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