The light of the eyes rejoiceth the heart (Proverbs 16:15). The beaming glance that shows a pure, happy mind and a friendly disposition, rejoices the heart of him on whom it is turned. There is something infectious in the guileless, joyful look of a happy man or child, which has a cheering effect upon those who observe it.
The LXX. makes the sentiment altogether personal: "The eye that seeth what is good rejoiceth the heart." A good report (good tidings) maketh the bones fat; strengthens them and gives them health (comp.
Proverbs 3:8; Proverbs 16:24). Sight and hearing are compared in the two clauses, "bones" in the latter taking the place of "heart" in the former. The happy look and good news alike cause joy of heart.