Entity Relationship Diagrams/Religion

It can be said that Christianity follows a 1-to-many (1-M) relationship in that one man (Jesus Christ) died for all humankind and that all are offered eternal life through this one man's death upon the cross. Likewise, this relationship can be expressed with minimum cardinalities (1:1; 0:M) such that Christ is the only way to heaven (1:1) but that not all who are offered the chance of eternal life will accept the gracious and divine gift of salvation through Christ (0:M). 

In at least 250 words, relate this to a biblical scenario. Specifically, discuss one example of a biblical relationship, principle, or event in which a 1-to-many or many-to-many relationship exists with at least 1 cardinality of zero. Elaborate on the implications of this relationship. For example, in the above illustration, the minimum cardinality of zero from Christ to mankind means that not all who are offered the gift of salvation accept it. The minimum cardinality of one from mankind to Christ means that Jesus is the one and only way to eternal salvation. 

Additional write two short different paragraphs/replies that either support or refute the information presented.