Ambrose of Milan : Therefore, gather from this that the establishment of the earth is in the power of God, as it is written: "He looks at the earth, and it trembles." And elsewhere: "Yet once more I shake the earth." Therefore, it does not remain motionless in its balance, but it is frequently moved by the will and power of God, as even Job says: "For the Lord shakes it from its foundation; its pillars tremble." And elsewhere: "The naked underworld is in his sight, and there is no covering for death, extending the North for nothing, suspending the earth into nothingness, binding the water in his clouds... The pillars of the heavens tremble and quake at his reproof; by his power he stilled the sea, by his understanding he struck down Rahab." Therefore, it does not rely on its own foundations, nor does it persist stable on its own supports; but the Lord has established it and sustains it by the firmness of His will; for all the ends of the earth are in His hand. And this simplicity of faith surpasses all arguments. — The Six Days of Creation 1.6.22 Augustine of Hippo : There remain for discussion the three minor prophets who belong to the closing days of the captivity, namely, Haggai, Zechariah and Malachi. To begin with, Haggai has the following brief but clear prophecy of Christ and the church: "For thus says the Lord of hosts: yet one little while, and I will move the heaven and the earth, and the sea and the dry land. And I will move all the nations, and the desired of all nations shall come." It is obvious that this prediction is, in part, already fulfilled; the rest we may confidently expect at the end of the world. Surely God set the heavens rocking when angels and a star stood as witnesses to the birth of Christ; surely too he moved the earth when he performed the tremendous miracle of giving Christ a virgin birth. Surely he moved the sea and the dry land when he made Christ's name known throughout the whole world, on island and on mainland. For the rest, we ourselves are witnesses of the fact that all nations are being moved to accept the faith. The last part of the text, "and the desired of all nations shall come," refers to Christ's second coming. For before the whole world can await him and desire his coming, it just first believes in him and loves him. — City of God 18.35