Christian observances of Jewish holidays of the Churches of God, the Day of Atonement is observed as an annual Sabbath where members fast in observance of Leviticus 23:27-29. Most, like Roderick C. Meredith, leader of the Living Church of God, also believe that the Day of Atonement "pictures the binding of Satan at the beginning of the Millennium and the world becoming at one with God." Children and those with medical conditions for whom fasting could be detrimental are not expected to participate. Many groups affiliated with Messianic Judaism have provided instruction describing the evangelical significance for observance of this day. One rationale for celebrating
Substitutionary atonement technical use of the term "substitution" in discussion about atonement when it is used in "the sense that [Jesus, through his death,] did for us that which we can never do for ourselves". There are a number of differing theories that come under the umbrella term "substitutionary atonement". The four best known are the Early Church Fathers' ransom theory; Gustaf Aulen's version of the ransom theory, called Christus Victor; Anselm of Canterbury's satisfaction theory; and the Reformed period's penal substitution theory. Care should be taken when one reads the language of substitution in, for example, patristic literature, not to assume