The Blumhardts, father and son, two witnesses to the power of the Holy Spirit, heralds of the breaking in of God's kingdom here on earth. And almost inseparable today, so completely did the son take up his famous father's mantle and absorb his vision. But God marches forward in history, and whoever stands still is in danger of losing God. Here the son, Christoph Friedrich Blumhardt, writes as nowhere else about his father, Johann Christoph...