The bible tells us that there is neither Jew nor Greek, bond nor free, male nor female but that we are all one in Christ Jesus. That is what the bible tells us. Presumption is closely related to pride. Most specifically it is a form of spiritual pride which presumes a privileged position with the L-rd. It is undue confidence in and attention to one's own skills, accomplishments, state, possessions, or position.
Presumption is easier to recognize than to define, easier to recognize in others than in oneself.
Many biblical words describe this concept, each with its own emphasis. Presumption is the opposite of humility, the proper attitude one should have in relation to G-d. This attitude toward God finds expression in one's attitude toward others, often causing people to have a low estimate of the ability and worth of others and therefore to treat them with either contempt or cruelty. Presumption and pride may be considered to be the root and essence of sin. Perhaps it is sin in its final form.