When we speak of the cal of God, we are apt to forget the most important feature, viz., the nature of the One Who cal s. There is the cal of the sea, the cal of the mountains, the cal of the great ice barriers, but these cal s are only heard by the few. The cal is the expression of the nature from which it comes, and we can only record the cal if the same nature is in us. The cal of God is the expression of God's nature, not of our nature.