Article
An older English Bible may render the phrase “if thine eye be single,” while the New Revised Standard Version Updated Edition (NRSVue) reads “if your eye is healthy.” That difference can make a familiar line feel like a puzzle about hidden sight. The Greek wording and its setting offer a narrower starting point: a body-and-lamp image paired with moral language about light and darkness. They do not point to a pineal gland or a third eye.
Start with the wording on the page
Matthew 6:22–23 and Luke 11:34–36 both use haplous for an eye and ponēros in the contrast that follows. The comparison links an eye with the body's lamp, then speaks of light or darkness within. The SBL Greek New Testament lets a reader inspect the shared vocabulary directly; the NRSVue offers a readable “healthy/unhealthy” rendering. Neither translation is a neutral window; each makes choices about how an old expression sounds in present English.[1][2]
The word haplous has a range that includes “single” or “simple,” and the phrase can be heard differently when an English version chooses “healthy.” Older “single” renderings preserve one possible sense, but a translation choice is not proof that the line names a special organ or hidden faculty. A lexical entry should be read alongside syntax and context, not used as a one-word verdict.[1][2][3]
Translation carries interpretation
For a reader who knows the older “single eye” phrase, single can seem to point toward one focused inner eye. The NRSVue's “healthy” steers toward bodily soundness and light. Those readings are not identical, and a familiar English phrase can carry later associations the Greek text does not state. The image begins with an eye functioning as a lamp, not a description of pineal anatomy.[1][2]
An ethical reading also belongs in the discussion. A generosity interpretation has been proposed through context and idiom, but it is not a settled one-word gloss for haplous. Some historical discussions also ask whether “evil eye” language may evoke envy or withholding. That is not a dictionary equation between ponēros and “stingy.” The cited studies are useful leads, but their full arguments need direct checking before a stronger verdict.[3][4][5]
An ethical image is not an anatomy lesson
The language invites a moral as well as bodily reading: what one attends to can shape the way one sees and acts. Yet that point should not be turned into a claim that the verse teaches a modern psychological mechanism. A moral metaphor can carry meaning without becoming a technical account of sensation, and a Greek adjective does not resolve which interpretation best explains every element of the passage.[1][4]
Reading carefully means holding two facts together: the NRSVue offers a useful modern base, and other readings remain possible where idiom and context carry weight. If generosity is part of a proposed interpretation, it needs an argument about the saying's language and literary setting. It cannot be smuggled into a dictionary gloss and then treated as settled.[2][3][4]
Keep the question open
The title asks what Jesus meant, but surviving texts give us sayings in literary forms, not a recording of an ancient conversation. We can describe the Greek and compare the Gospel contexts; we should not collapse translation, historical intention, later spiritual symbolism, and physiology into one claim. Neither passage names a pineal gland or a third eye.[1][2]
If you read the image as a question about attention, generosity, or bodily perception, what in the passage leads you there, and what evidence would make you revise that reading?