So what's the difference? The difference is the author, the creator. This painting has value because of who created it. It is the same for us. Our value is derived from our Creator.
We hear cries for Truth, Mercy, Justice, Love and Peace. We all want these things, but why are these things in demand? Did they just randomly and through time show up in our culture of humanity? Or were they placed there by the One who created everything? These concepts are operating on the seemingly universal truth that life has value. However, if humanity has arrived at it's current place only by chance, through the machinations of Time + Matter + Chance then what is the argument for the importance of life? If we came from nothing, then despite our immediate desires for survival, we are worth nothing. But that is not what I believe and that is not where I put my hope. And if we find the courage to put our hope in God, believing that he has created and trusting that our value comes from him, then that changes everything. In this truth we find the realization that all human life has value. And well, as flawed as we are, that seems like a good place to start.