'Partiality' in the Bible
You are not to show partiality to a poor man in his lawsuit.
"You are not to be unjust in deciding a case. You are not to show partiality to the poor or honor the great. Instead, decide the case of your neighbor with righteousness."
So let the fear of the LORD rest upon you, be on your guard, and act carefully, because with the LORD our God there is neither injustice, nor partiality, nor bribery."
"He will be sure to rebuke you, if you show partiality in secret.
Here are some more proverbs from wise people: It isn't good to show partiality in judgment.
To show partiality isn't good, yet for a piece of bread the valiant will transgress.
"So I also made you despised, humiliating you before all of the people, because you aren't following my ways and are showing partiality when you teach."