Sin and human nature affect everyone in society—from king to commoner—but God has covered sin from every angle in the sacrifice of His Son, fulfilling Leviticus 4-5.
There must be something to prove we are one with Christ and in union with the Father and the Son. That something is the manner in which we conduct our life.
Abraham was willing to lay down his life to rescue his nephew Lot. His sacrifice shows us what kind of effort and sacrifice is needed to wage spiritual war.