If you show partiality to persons, you commit sin and are convicted by the law as a transgressor. For whoever keeps the entire law and yet fails in one point is guilty of all. James 2:9-10
Therefore, whoever breaks one of the least of the commandments and teaches others to do so shall be called the least in the kingdom of heaven: But whoever practices and teaches them, the same shall be called great in the kingdom of heaven. Matt 5:19