Repentance
Acts 26:20 (NKJV)
but declared first to those in Damascus and in Jerusalem, and throughout all the region of Judea, and then to the Gentiles, that they should repent, turn to God, and do works befitting repentance.
This verse came to mind as I read a Fox news article tonight about the recent confession of a 2004 murder in NY city. You can find the story here.