Righteousness - Leviticus 19:15
"Ye shall do no unrighteousness in judgment: thou shalt not respect the person of the poor, nor honor the person of the mighty: but in righteousness shalt thou judge thy neighbor." (Leviticus 19:15)
In "Biblical Perspective" for this lesson, Dr. Gordon Snider writes:

Righteousness can also be translated “justice,” and speaks directly to the theme of the lesson today. Fairness, or justice, requires equality of treatment. Thou shalt not respect the person of the poor reminds us that it is wrong to honor the poor simply because they are poor. Human nature tends to run to extremes. Either we disdain the poor, or we elevate them. Fairness requires equal treatment regardless of economic status.

Discussion: How can we avoid the temptation of responding to injustice by swinging to one extreme or the other?
Source: Biblical Family Values, Adult Teacher's Insights, page 66.