Soon after his imprisonment, Berkowitz invited Malachi Martin, an exorcist, to help him compose an autobiography, but the offer was not accepted. During later years, Berkowitz developed his memoirs with assistance from evangelical Christians. His statements were released as an interview video, Son of Hope, during 1998, with a more extensive work released in book form, entitled Son of Hope: The Prison Journals of David Berkowitz (2006). Berkowitz does not receive any royalties or profit from any sales of his works. He has continued to write essays on faith and repentance for Christian websites. His own official website is maintained on his behalf by a church group, since he is not allowed access to a computer. Berkowitz stays involved with prison ministry, and regularly counsels troubled inmates. While in the Sullivan facility, he pursued education and graduated with honors from Sullivan Community College.