"Jesus answered and said to them, 'This is the work of God, that you believe in Him whom He sent.'" (John 6:29)

To believe that Jesus is the Christ is the "work of God." Some argue that if "works" were necessary, it would nullify salvation by grace. However, they fail to understand the difference between meritorious works devised by men from those commanded by God. Salvation is not by "grace alone" or "faith alone," but by "grace through faith" (Eph. 2:8), and by "faith which works through love" (Gal. 5:6). Whenever one obeys the "works" which God ordained, it does not nullify grace, but complements it. Grace teaches us to obey (Titus 2:11-14). Jesus is the author of eternal salvation to all who obey Him (Heb. 5:8-9).