Related:

• Iron sharpeneth iron; so a man sharpeneth the countenance of his friend.
  -- Old Testament -- Proverbs xxvii, 17...
• A continual dropping in a very rainy day and a contentious woman are alike.
  -- Old Testament -- Proverbs xxvii, 15...
• Boast not thyself of to-morrow; for thou knowest not what a day may bring forth.
  -- Old Testament -- Proverbs xxvii, 1...
• Open rebuke is better than secret love. -- Old Testament -- Proverbs xxvii, 5
• In the multitude of counsellors there is safety. -- Old Testament -- Proverbs xi, 14; xxiv, 6
• Go to the ant, thou sluggard; consider her ways, and be wise. -- Old Testament -- Proverbs vi, 6
• A man that hath friends must show himself friendly
  and there is a friend that sticketh closer than a brother....
• The voice is Jacob's voice, but the hands are the hands of Esau.
  -- Old Testament -- Genesis xxvii, 22...
• A merry heart maketh a cheerful countenance. -- Old Testament -- Proverbs xv, 13