The ramifications

But what surprises us here is that the words used for “healthy” (haplous) and “unhealthy” (ponēros) are words often used for “generous” and “stingy.” Words that appear to be rather innocent take on a more pointed economic flavor. The economic hints of these images make more clear why “healthy” and “unhealthy” are connected to the previous one (“treasure” in 6:21) and the following one (“God and money” in 6:24): the image about the lamp and the eye is a moral image for how one responds to the needy with compassion.— Sermon on the Mount, page 208