Underlying the conciliar definitions about Christ as God and man, there are two basic principles concerning our salvation. First, only God can save us. A prophet or teacher of righteousness cannot be the redeemer of the world. If, then, Christ is to be our Saviour, he must be fully and completely God. Secondly, salvation must reach the point of human need. Only if Christ is fully and completely a man as we are, can we men share in what he has done for us.