When it comes to the knowledge of how one may stand before God and attain eternal life, that is truly not to be achieved by our work or power, nor to originate in our brain. In other things, those pertaining to this temporal life, you may glory in what you know, you may advance the teachings of reason, you may invent ideas of your own; for example: how to make shoes or clothes, how to govern a household, how to manage a herd. In such things exercise your mind to the best of your ability. Cloth or leather of this sort will permit itself to be stretched and cut according to the good pleasure of the tailor or shoemaker. But in spiritual matters, human reasoning certainly is not in order; other intelligence, other skill and power, are requisite here – something to be granted by God himself and revealed through his Word.