A righteous person flowers like a date-palm, grows like a cedar in Lebanon. (92:13)
Good behavior is contagious. Unfortunately, so is bad behavior, but the Psalmist and I would rather focus on the power of goodness to multiply. The metaphor in our verse has at multiple layers of meaning.
First, just as a date-palm produces many dates and a cedar tree produces many branches and leaves, a righteous person will have many children. This layer of meaning may not always prove itself to be true. Either because of infertility or by choice, some wonderful and giving people might not have children, or might only have one or two.
Second, just as both a date-palm and a cedar tree grow straight and tall, so too a righteous person stands tall and walks a straight path. By definition a righteous person follows a straight path as long as we define this to mean that such a person lives according to their principles. Great practitioners of civil disobedience like Gandhi, Martin Luther King, Jr., and Rosa Parks lived precisely according to their sense of justice, even when it meant disobeying the law. Humility is also a significant value, so one can proudly stand up for one’s convictions while also avoiding the sin of arrogance.
Third, the fruit, branches, and leaves on the trees can also be understood as the good deeds of the righteous person. Just as the trees sweeten the world with the smell and taste of their products, so too do the actions of a good person make the world a sweeter place.
Psalm 92, with its focus on the victory of joy, faithfulness, and righteousness, is also known as the Psalm for Shabbat. The actions of righteous people bring the world closer to “a day which is all Shabbat,” one of the Jewish expressions for the messianic era.