The Bible teaches that believers are many individuals making up one whole body. We are different nationalities, ages, and genders the blood is always red because we are one with God. Humility requires that we recognize and function within the concept of the body of Christ.

For just as each of us has one body with many members, and these members do not all have the same function, so in Christ we, though many, form one body, and each member belongs to all the others.
Romans 12:4-5 NIV