Ephesians 3:18 is Paul’s prayer that Christians would be strengthened to grasp, together with all believers, how wide, long, high and deep the love of Christ really is. Paul writes it to the church in Ephesus, and he is praying for them from prison, asking God to give them the inner ability to understand something far too large for any one person to hold alone.
May be strengthened to comprehend with all the saints what is the width and length and height and depth…
Ephesians 3:18 (WEB)
What Ephesians 3:18 Means
The verse begins with a request for strength. Paul does not ask that believers be given a new piece of information. He asks that they be strengthened, the way a body is strengthened to lift something heavy, so that they can take in a truth that stretches beyond ordinary thinking. The understanding he has in mind is not only mental. It is the kind of knowing that changes how a person lives.
The four dimensions named in the verse, width, length, height and depth, are measurements of space. Paul uses them as a picture of how big God’s love is, reaching in every direction and covering every part of a person’s life. Scholars debate exactly what each dimension points to, and Paul himself does not spell it out. What he makes clear is that the love is too vast to be measured fully by any one believer.
The verse does not promise that anyone will fully explain or master this love. Paul says the saints are to comprehend it together, which suggests that the church grows in this understanding over time and in community. It is a prayer for growth, not a claim that the mystery has been solved.
The Context of Ephesians 3:18
Ephesians is traditionally attributed to Paul, and most readers take it as his letter to churches in and around Ephesus, a major city in western Asia Minor. Chapter 3 is a prayer section, and it shows Paul shifting from explaining how Gentiles have been included in God’s plan to asking God to deepen the readers’ hold on that plan. The prayer in verses 14 to 21 forms one long sentence in the original Greek, which shows how much weight Paul placed on it.
Just before verse 18, Paul prays that believers will be rooted and grounded in love. Right after it, he says they should know a love that surpasses knowledge, and he asks that they be filled with all the fullness of God. Read in that setting, the measurements in verse 18 describe the depth of a love that is already at work in believers and that they are invited to grasp more fully, not a distant love they have to earn.
Key Phrases in Ephesians 3:18
Romans 8:38-39
38 For I am persuaded that neither death, nor life, nor angels, nor principalities, nor things present, nor things to come, nor powers, 39 nor height, nor depth, nor any other created thing, will be able to separate us from God’s love, which is in Christ Jesus our Lord.
(WEB)
Paul’s list in Romans 8 names the forces that cannot separate believers from God’s love, which helps readers see the practical reach of the love Ephesians 3:18 describes. Both passages show Paul trying to put into words a love that exceeds what any one list can contain.
Ephesians 3:19
And to know Christ’s love which surpasses knowledge, that you may be filled with all the fullness of God.
(WEB)
Verse 19 is the direct continuation of Paul’s prayer, where he asks that believers know a love that surpasses knowledge and be filled with God’s fullness. Reading it alongside verse 18 shows that understanding the love and experiencing its fullness are closely linked in Paul’s thinking.
A Short Prayer From Ephesians 3:18
Father, I ask that You strengthen me by Your Spirit, as Paul prayed for the church in Ephesus. I am often small in my thinking about Your love, measuring it by my moods, my mistakes and my successes. Give me the inner power to grasp how wide, long, high and deep Your love really is, and help me to grasp it together with the other believers You have placed around me.
Where I feel too far gone, remind me that Your love reaches there too. Where I feel I must earn Your favor, let me rest in what You have already given in Christ. Fill me with more of Your fullness each day, so that my life shows what I have come to know. Amen.
