These things I have spoken unto you, that in me ye might have peace. In the world ye shall have tribulation: but be 118 of good cheer; I have overcome the world.

-Bible (NewTestament)
St  John16:33.

Piping down the valleys wild, Piping songs of pleasant glee, On a cloud I saw a child, And he laughing said to me, 'Pipe a song about a lamb!' So I piped with merry cheer. 'Piper, pipe that song again!' So I piped. He wept to hear.

-Blake,William
  Songs of Innocence,'Introduction'.

Greet the unseen with a cheer!

-Browning, Robert
  Asolando, epilogue.

Cheer upöthe worst is yet to come.

-Johnson, Philander Chase
  In Everybody's Magazine, May.

And even the ranks of Tuscany Could scarce forbear to cheer.

-1st Baron
  Lays of  Ancient Rome,'Horatius', stanza 60.

Lie soft, sleep hard, drink wine, and eat good cheer.

-Middleton,Thomas
  A Chaste Maid in Cheapside (published1630), act1, sc.1.

I always cheer up immensely if an attack is particularly wounding because†it meansthat they have not a single political argument left.

-Thatcher, Margaret HildaThatcher, Baroness
  In the DailyTelegraph, 21 Mar.