'Neighbor' in the Bible

For the whole Law [concerning human relationships] is fulfilled in one precept, “You shall love your neighbor as yourself [that is, you shall have an unselfish concern for others and do things for their benefit].”

But each one must carefully scrutinize his own work [examining his actions, attitudes, and behavior], and then he can have the personal satisfaction and inner joy of doing something commendable without comparing himself to another.