The Prayer of Hannah, from 1 Samuel, chapter 2.  This deeply spoke to me recently.  

1 And Hannah prayed, and said, My heart rejoiceth in the Lord, mine horn is exalted in the Lord: my mouth is enlarged over mine enemies; because I rejoice in thy salvation.

2 There is none holy as the Lord: for there is none beside thee: neither is there any rock like our God.

3 Talk no more so exceeding proudly; let not arrogancy come out of your mouth: for the Lord is a God of knowledge, and by him actions are weighed.

4 The bows of the mighty men are broken, and they that stumbled are girded with strength.

5 They that were full have hired out themselves for bread; and they that were hungry ceased: so that the barren hath born seven; and she that hath many children is waxed feeble.

6 The Lord killeth, and maketh alive: he bringeth down to the grave, and bringeth up.

7 The Lord maketh poor, and maketh rich: he bringeth low, and lifteth up.

8 He raiseth up the poor out of the dust, and lifteth up the beggar from the dunghill, to set them among princes, and to make them inherit the throne of glory: for the pillars of the earth are the Lord's, and he hath set the world upon them.

9 He will keep the feet of his saints, and the wicked shall be silent in darkness; for by strength shall no man prevail.

10 The adversaries of the Lord shall be broken to pieces; out of heaven shall he thunder upon them: the Lord shall judge the ends of the earth; and he shall give strength unto his king, and exalt the horn of his anointed.