The question for Christians is not What could we do? after the fact. Rather, “What can I do to combat anti-Semitism today?”
While David eloquently acknowledges God’s preservation of the Jewish people, the prophet Isaiah assures that God is aware of all they have had to endure.
Set an alarm to pause in a moment of silent solidarity with our Jewish friends, neighbors and co-workers. Then, determine to use Yom HaShoah to counter those who attempt to diminish and co-opt the memory of the Holocaust.