Притчи 15:30

Two proverbs regarding the eye and the ear: 30 The light of the eye rejoiceth the heart, And a good message maketh the bones fat. Hitzig corrects also here: מראה עינים, that which is seen with the eyes, viz., after long desire; and certainly מראה עינים can mean not only that which the eyes see (Isa 11:3), but also this, that the eyes do see. But is it true what Hitzig says in justification of his correction, that מאור never means light, or ray, or brightness, but lamp (φωστήρ)? It is true, indeed, that מאור עינים cannot mean a cheerful sight (Luther) in an objective sense (lxx θεωρῶνὀφθαλμὸς καλά), as a verdant garden or a stream flowing through a landscape (Rashi), for that would be מראה מאיר עינים, and "brightness which the eyes see" (Bertheau); the genitive connection certainly does not mean: the מאור is not the light from without presenting itself to the eyes, but, like אור עינים (Psa 38:11) and similar expressions, the light of the eye itself [bright or joyous eyes]. But מאור does not mean alone the body of light, but also the illumination, Exo 35:14 and elsewhere, not only that which (ὄ, τι) gives light, but also this, that (ὄτι) light arises and is present, so that we might translate it here as at Psa 90:8, either the brightness, or that which gives light. But the clear brightness of one's own eye cannot be meant, for then that were as much as to say that it is the effect, not that it is the cause, of a happy heart, but the brightness of the eyes of others that meet us. That this gladdens the heart of him who has a sight of it is evident, without any interchanging relation of the joy-beaming countenance, for it is indeed heart-gladdening to a man, to whom selfishness has not made the χαίρειν μετὰ χαιρόντων impossible, to see a countenance right joyful…

Two things are here pronounced pleasant: - 1. It is pleasant to have a good prospect to see the light of the sun (Ecc 11:7) and by it to see the wonderful works of God, with which this lower world is beautified and enriched. Those that want the mercy know how to value it; how would the light of the eyes rejoice their hearts! The consideration of this should make us thankful for our eyesight. 2. It is more pleasant to have a good name, a name for good things with God and good people; this is as precious ointment, Ecc 7:1. It makes the bones fat; it gives a secret pleasure, and that which is strengthening. It is also very comfortable to hear (as some understand it) a good report concerning others; a good man has no greater joy than to hear that his friends walk in the truth.

15:30 Just as how we feel affects our demeanor (see 15:13), what we experience (such as another person’s cheerful look or good news) can affect how we feel.