If I forget thee, O Jerusalem, let my right hand forget her cunning.

Related:

• My cup runneth over. -- Old Testament --
  Psalm xxiii,...
• We hanged our harps upon the willows. -- Old Testament -
  Psalm cxxxvii,...
• I have heard of thee by the hearing of the ear; but now mine eye seeth thee.
  Old Testament -- Job xlii,...
• Length of days is in her right hand; and in her left hand riches and honour.
  Old Testament -- Proverbs iii,...
• They are like the deaf adder that stoppeth her ear;
  which will not hearken to the voice of charmers, charming...
• Let there be no strife, I pray thee, between thee and me.
  Old Testament -- Genesis xiii,...
• Don't worry, Mr.B. I have a cunning plan to solve the problem.
  Yes, Baldrick, let us not forget that you tried to...
• The Lord reigneth; let the earth rejoice. -- Old Testament -
  Psalm xcvii,...
• I may tell all my bones. -- Old Testament --
  Psalm xxii,...