Tertullian

Herein consists the defence of our opinion, in accordance with Scripture, in accordance with Nature, in accordance with Discipline. Scripture founds the law; Nature joins to attest it; Discipline exacts it. Which of these (three) does a custom founded on (mere) opinion appear in behalf of? or what is the colour of the opposite view? God's is Scripture; God's is Nature; God's is Discipline. Whatever is contrary to these is not God's. If Scripture is uncertain, Nature is manifest; and concerning Nature's testimony Scripture cannot be uncertain. If there is a doubt about Nature, Discipline points out what is more sanctioned by God. For nothing is to Him dearer than humility; nothing more acceptable than modesty; nothing more offensive than "glory" and the study of men-pleasing. Let that, accordingly, be to you Scripture, and Nature, and Discipline, which you shall find to have been sanctioned by God; just as you are bidden to "examine all things, and diligently follow whatever is better."