Prosperity istheblessingofthe Old Testament, adversity is the blessing of the New.

-Bacon, Francis,Viscount St Albans
  Essays, no.5,'Of  Adversity'.

Now the L had said unto Abram,Get thee out of thy country, and from thy kindred, and from thy father's house, unto a land that I will shew thee: And I will make of thee a great nation, and I will bless thee, and make thy name great; and thou shalt be a blessing: And I will bless them that bless thee, and curse him that curseth thee: and in thee shall all families of the earth be blessed.

-Bible (Old Testament)
ORDGenesis12:1^3.

Thy brother came with subtilty, and hath taken away thy blessing.

-Bible (Old Testament)
Genesis 27:35.

Behold, how good and how pleasant it is for brethren to dwell together in unity! It is like the precious ointment upon the head, that ran down upon the beard, even Aaron's beard: that went down to the skirts of his garments; As the dew of Hermon, and as the dew that descended upon the mountains of Zion: for there the L commanded the blessing, even life for evermore.

-Bible (Old Testament)
ORDPsalms133:1^3.

Bring ye all the tithes into the storehouse, that there may be meat in mine house, and prove me now herewith, saiththe L of hosts, if Iwill notopenyouthewindows of heaven, and pour you out a blessing, that there shall not be room enough to receive it.

-Bible (Old Testament)
ORDMalachi 3:10.

Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be. Dotha fountainsend forthatthesameplacesweet water and bitter?

-Bible (NewTestament)
James 3:10^11.

Pour upon them the continual dew of thy blessing.

-Book of Common Prayer
Morning Prayer, Prayer for the Clergy and People.

The peace of God, which passeth all understanding, keepyourheartsandmindsintheknowledgeand love of God, and of his Son Jesus Christ our Lord: And the blessing of God Almighty, the Father, the Son, and the Holy Ghost, be amongst you and remain with you always. Amen.

-Book of Common Prayer
Holy Communion, Blessing.

If this is a blessing, it is certainly very well disguised.

-Churchill, Lord Randolph Henry Spencer
  On his defeat in the first post-war general election, quoted in Richard Nixon Memoirs (1978).

'There is no God', the wicked saith, 'And truly it's a blessing, For what he might have done with us It's better only guessing.'

-Clough, Arthur Hugh
  Dipsychus (published1865), sc.6.

I've seen the smiling of Fortune beguiling, I've felt all its favours and found its decay; Sweet was its blessing, kind its caressing, But now it is fled, fled far, far away.

-Cobden, Richard
  'The Flowers of the Forest'.

Look thy last on all things lovely, Every hour. Let no night Seal thy sense in deathly slumber Till to delight Thou have paid thy utmost blessing.

-de la Mare,Walter
  'Fare Well'.

A national debt, if it is not excessive, will be to us a national blessing.

-Hamilton, Alexander
  Letter to Robert Morris, 30  Apr.

O bom era ter uma intelige"  ncia e na‹  o entender. Era uma be"  n c° a‹  o estranha como a de ter loucura sem ser doida. Era um desinteresse manso em rela c° a‹  o a'  s coisas ditas do intelecto, uma do c° ura de estupidez. What was good was to have intelligence and yet not understand. It was a strange blessing like experiencing madness without being mad. It was a gentle lack of interest with respect to the so-called things of the intellect, a sweet stupidity.

-Lispector, Clarice
  Uma  Aprendizagem ou O Livro dos Prazeres, 'Luminesce"  ncia' (translated as  An  Apprenticeship or TheBook of Delights,1986).

The mere animal pleasure of travelling in a wild unexplored country is also great† The effect of travel ona manwhoseheart isintheright place isthatthemind is made more self-reliant: it becomes more confident of its own resourcesöthere isgreater presence of mind† The sweat of one's brow is no longer a curse when one works for God: it proves a tonic to the system, and actually a blessing. No one can trulyappreciate the charm of repose unless he has undergone severe exertion.

-Livingstone, Dr David
Collected in H  Waller (ed)  The Last  Journals of David Livingstone in Central  Africa; continued by a narrative of his last moments and sufferings, obtained from his faithful servants, Chuma and Susi (1874).

Oh there is blessing in this gentle breeze, Avisitant that while it fans my cheek Doth seem half conscious of the joy it brings From the green fields, and from yon azure sky. Whate'er its mission, the soft breeze can come To none more grateful than to me; escaped From the vast city, where I long had pined A discontented sojourner: now free, Free as a bird to settle where I will.

-Wordsworth,William
^1805  The Prelude, bk.1, l.1^9 (published1850).