Ephesians 3:18–19: The Love of Christ That Surpasses Knowledge
Introduction
I became a Christian in high school and began attending the local church just a mile down the road. After a few years of regular attendance and getting to know other youth and adults alike, I began to marvel at a certain man. A few times a year, when the pastor asked if anyone had a testimony to share, this elderly man would raise his hand and speak. His trembling voice said, “I’ve known Christ for all of my life, over 80 years now.” Tears streaming down his face. “Every year my love for him gets sweeter and sweeter. His love for us is bottomless.”
Here I am, over 3.5 decades removed from that instance, and he is now in the nearer presence of the Lord. The love we have for God and our understanding of God’s love for us can indeed increase; it doesn’t have to diminish!
How can anyone begin to grasp the boundless love of Christ? Ephesians 3:18–19 offers a glimpse into exactly that.
In these two verses, Paul reaches toward the heart of the Christian faith, the immeasurable, transformative love of Christ. This is not a theological concept or a warm sentiment. It is a reality Paul says surpasses ordinary understanding and reshapes a life from the inside. Paul's prayer for the Ephesians, and for every reader since, is that they might "grasp how wide and long and high and deep is the love of Christ" (v. 18, NRSV). This love is vast, infinite, all-encompassing, and also deeply personal, reaching into the core of who a person is.
It's worth remembering the circumstances Paul writes this from. Ephesians is one of Paul's prison epistles, written under Roman guard. A man confined to a small physical space writes here about a love with no measurable edge.
The Four Dimensions of Christ's Love
"That you may have power, together with all the Lord's holy people, to grasp how wide and long and high and deep is the love of Christ." Ephesians 3:18
The Dimensions of Christ's Love (Ephesians 3:18)
Paul prays that the Ephesians might "grasp how wide and long and high and deep is the love of Christ" (v. 18). These dimensions, breadth, length, height, and depth, paint a picture of a love that is boundless. It stretches beyond the limits of human comprehension, reaching into every corner of a life and, Paul implies, the universe itself.
Clinton E. Arnold notes that these dimensions are not merely poetic flourish. They reflect the all-encompassing nature of Christ's love: wide enough to embrace all people, long enough to endure through all time, high enough to reach the heavens, deep enough to heal the darkest parts of the human heart. (Pastors, that’s the structure of a great sermon right there!) It is a love that defies measurement and invites a lifelong journey of discovery rather than a single moment of understanding.
This same idea of Christ's surpassing worth shows up in Philippians 3:8, where Paul writes that he considers everything else a loss "because of the surpassing worth of knowing Christ Jesus my Lord." For Paul, the love of Christ is not one aspect of his faith among many. It is the central reality that reorders everything else, priorities, relationships, purpose, around itself.
Knowing the Love That Surpasses Knowledge (Ephesians 3:19a)
Paul's prayer takes a striking turn: that the Ephesians might "know the love of Christ that surpasses knowledge" (v. 19). At first glance, this is paradoxical. How can anyone know something that surpasses knowledge? But Paul is not describing intellectual mastery here. He is pointing toward an experiential, relational knowing of Christ's love.
Andrew T. Lincoln explains that this kind of knowing is relational rather than propositional. It is not about mastering a concept but encountering a person. To know Christ's love, in this sense, is to experience it, to feel its weight, and to let it shape a life, not simply to hold correct beliefs about it.
This same experiential knowing shows up in 1 John 4:16, where John writes, "we have come to know and to believe the love that God has for us." John is describing a lived reality, love encountered and recognized, not merely learned.
The Love of God Across Ephesians
Filled with the Fullness of God (Ephesians 3:19b)
Paul's prayer reaches its climax with an extraordinary request: that believers "may be filled with all the fullness of God" (v. 19). This asks for nothing less than being filled with the very essence of God, the ultimate goal of the Christian life, to be conformed to Christ's image and become vessels of his love and grace in the world.
Harold W. Hoehner emphasizes that this fullness is not a one-time event but an ongoing process, essentially Paul praying for the Ephesians' sanctification, the continued work of God in a life over its whole course. This fullness does not stay contained. It overflows into whoever the believer encounters next.
The same idea echoes in Philippians 1:9–11, where Paul prays that the Philippians' love "may abound more and more in knowledge and depth of insight." The love of Christ was never meant to be kept. It is meant to overflow.
Where the Prayer Goes Next
Paul does not end his prayer here. These two verses, the dimensions of love and the fullness of God, build directly toward the doxology in verses 20–21, one of the most quoted passages in the New Testament. That verse gets its own full treatment: Ephesians 3:20–21: Immeasurably More Than We Ask or Imagine.
Key Takeaways
Christ's love is beyond measure — wide, long, high, and deep, defying a single vantage point.
True knowing is experiential — not head knowledge alone, but a relational encounter that shapes daily life.
Believers are called to be filled with God's fullness — an ongoing process, not a single completed event.
FAQs
What are the four dimensions of Christ's love in Ephesians 3:18? Width, length, height, and depth, together painting a picture of love with no measurable edge, embracing all people, enduring all time, reaching to heaven, and healing the deepest wounds.
How can someone "know" a love that "surpasses knowledge"? Paul distinguishes between intellectual knowledge and relational, experiential knowing. The love of Christ can be described endlessly and still exceed what any description captures, the way knowing about a person differs from actually knowing them.
What does "filled with the fullness of God" mean? It describes the ongoing goal of the Christian life, being progressively shaped into Christ's likeness, not a single achievable moment but a lifelong process.
Does this passage cover verses 20–21 too? No, this page focuses specifically on verses 18–19. Verses 20–21 (the doxology "immeasurably more than we ask or imagine") get a full dedicated study here: Ephesians 3:20–21.
Works Consulted
Arnold, Clinton E. Ephesians. Zondervan Exegetical Commentary on the New Testament. Grand Rapids: Zondervan, 2010.
Hoehner, Harold W. Ephesians: An Exegetical Commentary. Grand Rapids: Baker Academic, 2002.
Lincoln, Andrew T. Ephesians. Word Biblical Commentary. Dallas: Word Books, 1990.
This prayer builds directly toward one of the most quoted verses in the New Testament. Visit the Ephesians Bible Study Hub for the full letter.
