And it's a question that Midrash Tehillim, a collection of rabbinic commentaries on the Book of Psalms, grapples with in its interpretation of Psalm 72.

The verse promises that the leader will "judge the poor with righteousness and save the children of the needy." A powerful image. It's not just about dispensing justice, but about actively protecting the vulnerable. About ensuring their well-being.

The text continues: "They shall fear you as long as the sun and the moon endure, throughout all generations." This evokes a sense of lasting impact, a legacy that stretches beyond a single lifetime. But what does it mean when it asks, "What is the meaning of 'David, for all generations'?" The Midrash offers a profound answer: "It refers to a generation that has no other generation after it." It's talking about a time so perfected, so complete, that it represents the culmination of all generations. A final, ideal state.

The imagery becomes even more beautiful as it unfolds: "He shall come down like rain upon the mown grass, like showers that water the earth." This is such a tender metaphor. It evokes a gentle, life-giving presence. Not a forceful storm, but a nurturing rain that allows growth and renewal.

And what will be the result of this righteous leadership? "In his days shall the righteous flourish, and abundance of peace so long as the moon endureth." Flourishing, abundance, peace... these are the hallmarks of a society guided by true righteousness. The Midrash Tehillim then directs us to Psalm 92:13-14, "The righteous shall flourish like the palm-tree; he shall grow like a cedar in Lebanon. They are planted in the house of the Lord; they shall flourish in the courts of our God. They shall still bring forth fruit in old age; they shall be full of sap and richness." What vivid imagery! The palm and the cedar, symbols of strength and longevity, planted firmly in the house of God.

The text draws a parallel between the physical world and the spiritual realm. "Just as the sun and the moon give light to this world, so shall the righteous give light to the world to come, as it is said, 'And nations shall walk at thy light, and kings at the brightness of thy rising' (Isaiah 60:3)."

It’s a stunning connection. The righteous, like the sun and moon, become beacons of hope and guidance, illuminating the path for others, even in the world to come. They aren't just leaders; they're sources of light, guiding nations and kings alike.

So, what does this all mean for us today? Perhaps it's a call to consider our own roles as leaders, whether in our families, our communities, or even just in our own lives. Are we judging with righteousness? Are we protecting the vulnerable? Are we striving to be sources of light for those around us? It's a high bar, no doubt. But it’s a vision worth striving for, a vision of a world where righteousness flourishes and peace abounds. A world where the light of the righteous shines as brightly as the sun and the moon.