Certain folks will cite John 6:29 and say, there it is. Believing is a work just like any other work, yet I believe that Jesus was using a play on words here in John 6:29, when He said - "This is the work of God, that you believe in Him whom He has sent," when He answered the Jews (who were taking a legalistic approach) when they asked, "What shall we do, so that we may work the works of God?" Jesus was implying here that believing is just "another" work in a series of works in a quest to receive salvation by works, in contradiction to Ephesians 2:8,9. Through believing, we are completely trusting in "Another's work," (Christ's finished work of redemption - Romans 3:24-28).