Search this study companion
At a glance
Jesus' image of a single versus an evil eye describes a heart that either looks in one direction only — toward Christ — or is split between rival loyalties and therefore full of darkness.
Not naive indifference to real needs, but the freedom of a heart no longer split — seeking the kingdom first releases a person from the anxious, exhausting work of also trying to secure themselves.
The chapter heading text (KJV)
“Lay not up for yourselves treasures upon earth… No man can serve two masters… Ye cannot serve God and mammon… Take no thought for your life, what ye shall eat, or what ye shall drink… but seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you.”
Matthew 6:19–24, 25–34 KJV
Summary
Bonhoeffer reads this longer section as the practical outworking of the single-mindedness demanded throughout the Sermon, now applied to possessions and daily anxiety. The image of the single eye — filling the whole body with light when it looks one way, filling it with darkness when divided — becomes his key to the whole passage: a heart cannot serve God and material security at once without the resulting confusion showing up in exactly the anxious, grasping quality of life Jesus goes on to describe.
He is emphatic that the ‘carefree life’ Jesus commends is not indifference to real needs — the passage takes food and clothing entirely seriously as genuine necessities — but freedom from the exhausting, futile attempt to secure those necessities by one's own anxious effort, as though God could not be trusted to provide them. Anxiety, on this reading, is not a a minor character flaw but a form of practical unbelief, treating provision as something the disciple must personally guarantee rather than receive.
Seeking the kingdom of God ‘first’ is therefore not one priority among several competing for attention, ranked highest on a list; it is the single orientation that reorders everything else, so that food, clothing and the ordinary business of living cease to be objects of anxious pursuit and become, instead, things trusted to a Father who already knows what his children need. Bonhoeffer connects this directly back to the disciple who has left everything to follow Christ in Part I — the carefree life is simply what that original renunciation looks like carried through into daily practical existence.
He closes by acknowledging how impossible this sounds to a self relying on its own resources, and how obviously possible it becomes once a person is actually living inside the fellowship of Christ described throughout the book — given, as the earlier chapter on discipleship and the cross put it, the strength to do what is commanded along with the command itself. The carefree life is not achieved by trying harder to worry less; it follows from where the single eye is actually looking.
Key points
- The image of a single versus an evil eye names a heart either wholly oriented toward God or divided between rival loyalties, with anxiety as the visible symptom of division.
- The ‘carefree life’ Jesus commends is not indifference to genuine need but freedom from the exhausting, self-reliant effort to secure that need apart from trusting God.
- Anxiety is treated as a form of practical unbelief — acting as though provision depends on the disciple's own guarantee rather than the Father's care.
- Seeking the kingdom ‘first’ is a single reorienting priority, not one item on a list, which reorders how everything else, including material need, is held.
- This carefree life follows directly from the renunciation of Part I — it is what leaving everything to follow Christ looks like carried into daily, practical existence.
Related Scripture
- Philippians 4:6–7
- 1 Peter 5:7
- Luke 12:22–31
- Hebrews 13:5
For reflection and discussion
- Where does anxiety about provision — money, security, the future — show up most persistently in your own life right now?
- Bonhoeffer calls anxiety a form of practical unbelief rather than a neutral personality trait. Does reframing it that way change how you'd want to respond to it?
- What would visibly change in your daily decisions this week if seeking the kingdom were genuinely first, rather than one priority balanced against others?
These notes are an original UECF.NET study companion and are not a reproduction of Bonhoeffer's text, which remains in copyright. Read chapter 17 — book pages 192–201 — in The Cost of Discipleship by Dietrich Bonhoeffer (Macmillan / SCM Press, Revised and Unabridged Edition). Scripture quotations above are the King James Version.
