Chalcedonian definition of the person of Christ (AD 451) refuted these inadequate views and became the standard orthodox statement on the biblical teaching on who Christ is. It affirmed that the eternal Son of God (1) took to himself a truly human nature; (2) his divine and human natures remain distinct and retain their own properties; (3) yet they are eternally and inseparably united together in one person. This definition means that one nature does some things the other nature does not, and anything