I have heard of thee by the hearing of the ear: but now mine eye seeth thee.Wherefore I abhor myself, and repent in dust and ashes.

-Bible (Old Testament)
Job 42:5^6.

And saying, Repent ye: for the kingdom of heaven is at hand. For this is he that was spoken of by the prophet Esaias, saying,The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight.

-Bible (NewTestament)
St Matthew 3:2^3.

And the times of this ignorance God winked at; but now commandeth all men every where to repent.

-Bible (NewTestament)
Acts of the  Apostles17:30.

   Thus grief still treads upon the heels of pleasure: Married in haste, we may repent at leisure.

-Congreve,William
  Sharper to Setter. The Old Bachelor, act 5, sc.1.

   Some by experience find those words mis-placed: At leisure married, they repent in haste.

-Congreve,William
  Setter to Sharper. The Old Bachelor, act 5, sc.1.

What a finething capital punishment is! Dead mennever repent; dead men never bring awkward stories to light. Ah, it's a finething for thetrade! Five of 'emstrung up ina row; and none left to play booty, or turn white-livered!

-Dickens, CharlesJohn Huffam
^9  Fagin. Oliver Twist, ch.9.

It doth repent me: words are quick and vain: Grief for a while is blind, and so was mine. I wish no living thing to suffer pain.

-Shelley, Percy Bysshe
  Prometheus Unbound, act1, l.303^5.