1 Corinthians 9:27

castaway

(Greek, "adokimos", "disapproved"). Greek, "dokimos", without the private, "a", is translated "approved" in (Romans 14:18); (Romans 16:10); (1 Corinthians 11:19); (2 Corinthians 10:18); (2 Corinthians 13:7); (2 Timothy 2:15); and in (James 1:12); by the word "tried." The prefix simply changes the word to a negative, that is, not approved, or, disapproved. The apostle is writing of service, not of salvation. He is not expressing fear that he may fail of salvation but of his crown.

See "Rewards"; (Daniel 12:3); (1 Corinthians 3:14).