Commentaries
10:16-20 The happiness of a land depends on the character of its rulers. The people cannot be happy when their princes are childish, and lovers of pleasure. Slothfulness is of ill consequence both to private and public affairs. Money, of itself, will neither feed nor clothe, though it answers the occasions of this present life, as what is to be had, may generally be had for money. But the soul, as it is not redeemed, so it is not maintained with corruptible things, as silver and gold. God sees what men do, and hears what they say in secret; and, when he pleases, brings it to light by strange and unsuspected ways. If there be hazard in secret thoughts and whispers against earthly rulers, what must be the peril from every deed, word, or thought of rebellion against the King of kings, and Lord of lords! He seeth in secret. His ear is ever open. Sinner! curse not THIS KING in thy inmost thought. Your curses cannot affect Him; but his curse, coming down upon you, will sink you to the lowest hell.
17. son of nobles—not merely in blood, but in virtue, the true nobility (So 7:1; Isa 32:5, 8).
in due season—(Ec 3:1), not until duty has first been attended to.
for strength—to refresh the body, not for revelry (included in "drunkenness").