Proverbs 21:1
21:1 The {a} king's heart [is] in the hand of the LORD, [as] the
     rivers of water: he turneth it wherever he will.

     (a) Though kings seem to have all things at commandment,
         they are not able to bring their own purposes to pass
         unless God has appointed: much less are the inferiors
         able.

Proverbs 21:4
21:4 An high look, and a proud heart, [and] the {b} plowing of
     the wicked, [is] sin.

     (b) That is, the thing by which he is guided or which he
         brings forth as the fruit of his work.

Proverbs 21:5
21:5 The thoughts of the diligent [tend] only to plenteousness;
     but of {c} every one [that is] hasty only to want.

     (c) He who goes rashly about his business and without
         counsel.

Proverbs 21:7
21:7 The {d} robbery of the wicked shall destroy them; because
     they refuse to do judgment.

     (d) He means this chiefly of judges and princes who leave
         that calling, to which God has called them, and
         impoverish their subjects to maintain their lusts.

Proverbs 21:11
21:11 {e} When the scorner is punished, the simple is made wise:
      and when the wise is instructed, he receiveth knowledge.

      (e) Read Proverbs 19:25.

Proverbs 21:12
21:12 The righteous [man] wisely {f} considereth the house of
      the wicked: [but God] overthroweth the wicked for [their]
      wickedness.

      (f) Though the godly admonish them both by words and
          example of life, yet the wicked will not amend, till
          God destroys them.

Proverbs 21:14
21:14 A {g} gift in secret pacifieth anger: and a reward in the
      bosom strong wrath.

      (g) To do a pleasure to the angry man pacifies him.

Proverbs 21:18
21:18 The {h} wicked [shall be] a ransom for the righteous, and
      the transgressor for the upright.

      (h) God will cause that to fall on their own heads, which
          they intended against the just by delivering the just,
          and putting the wicked in their places.

Proverbs 21:20
21:20 [There is] a treasure to be desired and {i} oil in the
      dwelling of the wise; but a foolish man spendeth it up.

      (i) Meaning, abundance of all things.

Proverbs 21:22
21:22 A {k} wise [man] scaleth the city of the mighty, and
      casteth down the strength of its confidence.

      (k) Wisdom overcomes strength and confidence in worldly
          things.

Proverbs 21:25
21:25 The desire of the slothful {l} killeth him; for his hands
      refuse to labour.

      (l) He thinks to live by wishing and desiring all things,
          but will make no effort to get anything.

Proverbs 21:28
21:28 A false witness shall perish: but the man that heareth {m}
      speaketh constantly.

      (m) He may boldly testify the truth that he has heard.