The same, from the 3rd Book.

Again, atheists mock at us concerning the Holy Cross and the worship of divine images, calling us idolators and worshippers of wooden gods. Now, if I am a worshipper of wood, as you say, I am a worshipper of many, and, if so, I should swear by many, and say, ‘By the gods,’ just as you at the sight of one calf said, ‘These are thy gods, O Israel.’ You could not maintain that Christian lips had used the expression, but the adulterous and unbelieving synagogue is wont ever to cast infamy upon the all-wise Church of Christ.