James 2:8-10

If, however, you are [really] fulfilling the royal law according to the Scripture, “YOU SHALL LOVE YOUR NEIGHBOR AS YOURSELF [that is, if you have an unselfish concern for others and do things for their benefit]” you are doing well. [Lev 19:18] But if you show partiality [prejudice, favoritism], you are committing sin and are convicted by the Law as offenders. For whoever keeps the whole Law but stumbles in one point, he has become guilty of [breaking] all of it.