 And one more thing, as Evans points out, a lot of people miss this when they read Mary's Magnificat. In the last couple of verses, Mary says this, He has helped his servant Israel, remembering to be merciful to who? Abraham and his descendants forever, even as he said to our fathers. That's in Luke 1, verses 54 and 55. So this goes all the way back to Abraham. And what did God promise Abraham?