Ephesians 5:17

Ephesians 5:17, in plain English

Don't be foolish and just drift through life—actually seek to understand what God wants for you and make decisions based on that.

Why it's here

Paul is contrasting foolishness with wisdom one more time. A fool acts without thinking about God's perspective. Wisdom means actively seeking to understand God's will and then obeying it.

Who's speaking

Paul, pressing home the call to intentional obedience

Where it sits in the story

From beginning to end, Scripture contrasts the fool who ignores God with the wise person who seeks Him. This is the most basic choice you make every single day.

The scholarly reading

Rather than foolish drift or compromise, believers must actively understand and embrace what God wills for their lives.

Language and setting

The repeated exhortation against foolishness (mē ginesthe aphrones—do not become unwise) frames understanding God's will not as optional enlightenment but as the basic requirement for avoiding enslavement to deception. The phrase 'understand what the Lord's will is' (syniēte ti to thelēma tou kyriou) uses syniēmi—a term suggesting both intellectual grasp and practical discernment. In Paul, theōria (God's will) is not arbitrary but is revealed through Scripture, the apostolic tradition, and the Spirit's illumination.

Voice

Paul, calling believers to decisive clarity about God's purposes.

Significance

This returns to the theme of verse 10's testing and proving, now with increased insistence. It reflects the Reformation's doctrine that all believers—not merely clergy—are responsible for understanding God's will, though always in community and with accountability. The arc from verse 15-17 moves: pay attention → redeem time → understand God's will—a cascade of increasingly focused intentionality.

15Pay careful attention, then, to how you walk, not as unwise but as wise,

16redeeming the time, because the days are evil.

17Therefore do not be foolish, but understand what the Lord’s will is.

18Do not get drunk on wine, which leads to reckless indiscretion. Instead, be filled with the Spirit.

19Speak to one another with psalms, hymns, and spiritual songs. Sing and make music in your hearts to the Lord,

Read all of Ephesians 5 — Imitate God as beloved children. Walk in love. Walk in light. Paul transforms the household codes of his day with a vision of mutual, sacrificial love.