Have you ever really thought about what it means to live as a true disciple of Jesus?
I mean, beyond just going to church, reading the Bible, or trying to be a “good” person. What does it actually look like to live in a way that reflects God’s commandments, day in and day out?
One of the best places to turn for answers is the Sermon on the Mount. It’s one of the most famous teachings of Jesus, but it’s also one of the most challenging.
This powerful message is more than just a list of do’s and don’ts—it’s a guide for how we, as followers of Christ, can live with integrity, grace, and love.
Jesus is saying that true greatness in the kingdom of God isn’t about how religious we appear to be. It’s about understanding, teaching, and living out God’s commandments in our daily lives.
Promises Matter: Keeping Our Word
In Matthew 5:33, Jesus says:
“Again, you have heard that the ancients were told, ‘You shall not make false vows, but shall fulfill your vows to the Lord.’” (NASB)
Here, Jesus is confronting the teachings of the scribes and Pharisees. These religious leaders had twisted the law in a way that allowed them to make promises in the name of just about anything—other people, the earth, even heaven—without really intending to keep them.
But Jesus turns that thinking upside down. He says, when you make a promise, it’s not just about the words you say. It’s about the integrity behind those words.
You need to keep your promises, especially when you make them in the name of the Lord. Your word should be trustworthy because as disciples of Christ, our integrity reflects our faith.
No Oaths Needed: Let Your Yes Be Yes
Jesus takes it a step further in Matthew 5:34:
“But I say to you, take no oath at all, neither by heaven, for it is the throne of God.” (NASB)
Here, Jesus is essentially saying, “Don’t swear by anything—not by heaven, not by earth, not by anything at all.” Why? Because your word should be enough.
As Christians, we are called to such a high standard of integrity that when we say we’re going to do something, people should know we mean it.
Jesus is reminding us that our words and our actions need to line up. We shouldn’t have to back up our promises with elaborate oaths or “swearing on” something sacred. Our “yes” should mean yes, and our “no” should mean no. Anything beyond that shows a lack of sincerity.
Integrity Above All
So, why is this such a big deal? Because our integrity as Christians is tied to our witness.
When people see that we keep our word, that we live honestly and truthfully, it reflects the heart of God. And when we don’t? It damages our witness, both to the people around us and to God.
Jesus warns against the danger of hypocrisy—looking one way on the outside but being something else entirely on the inside. We’ve all seen it before: someone who seems to have it all together, saying all the right things, but living in a way that contradicts their words.
It’s painful to see, and even more painful when we realize that sometimes, we’re guilty of it ourselves.
But here’s the good news: Jesus is inviting us to something greater. He’s calling us to a life of deeper integrity, where our actions and words are aligned with the heart of God.
How Can We Live This Out?
So, how do we apply this to our everyday lives?
It starts with reflecting on our words and promises. Are we people of our word? When we say we’ll do something, do we follow through? Or do we make promises we never intend to keep?
Let’s think about the commitments we’ve made—to God, to our families, to our friends, and even to ourselves. Are we living with the kind of integrity Jesus is talking about here? It might be time for some tough self-reflection.
Living as a true disciple of Christ isn’t easy. It requires us to be honest with ourselves and with others. But it’s also incredibly rewarding.
When we live with integrity, we experience a deeper sense of peace and fulfillment, knowing that we’re honoring God with our lives.
A Call to Integrity
At the end of the day, this passage from Matthew 5 isn’t just about making or breaking promises—it’s about our hearts. It’s about being the kind of people whose word means something, because we’re living out the truth of God’s commandments in our everyday lives.
Take this as an opportunity to reflect. Are we living with integrity? Are our words and actions aligned with what Jesus taught?
If we find areas where we’ve fallen short, we don’t need to stay stuck in guilt. Instead, let’s make a renewed commitment to be true to our promises and to the Lord.
Jesus calls us to something deeper, something more fulfilling than just outward appearances. He calls us to a life marked by integrity and obedience to God’s Word.
Let’s strive to be true disciples—people whose words carry the weight of honesty and whose actions reflect the love of Christ.
Devotion on Matthew 5:29-30 found here.
For Deeper Insights on the Sermon on the Mount: If you’re searching for an accessible, powerful commentary, I highly recommend The Sermon on the Mount: Matthew 5-7 by James Montgomery Boice. This book breaks down Jesus’ teachings with clarity and depth, guiding readers to not only understand but also live out these transformative truths. Explore more about this exceptional commentary here.
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