Tertullian’s famous question has echoed down through the centuries since he first posed it around the beginning of the third century after Christ.
Here’s another wonderful quotation, a favorite of mine, from one of the Hibbert Lectures given by Edwin Hatch and published in 1888 under the title of The Influence of Greek Ideas on Christianity:
It is impossible for any one, whether he be a student of history or no, to fail to notice the difference and contrast between the Sermon on the Mount and the Nicene Creed.
The Sermon on the Mount is the promulgation of a new law of conduct; it assumes beliefs rather than formulates them; the theological conceptions which underlie it belong to the ethical rather than the speculative side of theology; metaphysics are totally absent.The Nicene Creed is a statement partly of historical facts and partly of dogmatic inferences; the metaphysical terms which it contains would probably have been unintelligible to the first disciples; ethics have no place in it. The one belongs to a world of Syrian peasants, the other to a world of Greek philosophers.
[Why] an ethical sermon stood out in the forefront of the teaching of Jesus Christ, and a metaphysical creed in the forefront of the Christianity of the fourth century, is a problem which claims investigation . . .