What is another way to say "to which"?

I'm writing a paper and one of my sentences is "Once in an ancient time when scorching sand covered the walkways of Bethlehem and heroes were masked as ordinary people, a baby boy was born unto the world—a child that would forever change the selfsame ground to which billions of people would lay a foundation of faith, hope, and love." But that 'to which' just sounds reeeeeally bad. Can you help me come up with another solution? Thanks so much!