Before John Calvin began writing on the doctrine of election, he offered precautions to two groups, the overly curious and those who dismiss its study (the other extreme). To the overly curious he says,
The subject of predestination, which in itself is attended with considerable difficulty is rendered very perplexed and hence perilous by human curiosity, which cannot be restrained from wandering into forbidden paths and climbing to the clouds determined if it can that none of the secret things of God shall remain unexplored. When we see many, some of them in other respects not bad men, every where rushing into this audacity and wickedness, it is necessary to remind them of the course of duty in this matter. First, then, when they inquire into predestination, let then remember that they are penetrating into the recesses of the divine wisdom, where he who rushes forward securely and confidently, instead of satisfying his curiosity will enter in inextricable labyrinth. For it is not right that man should with impunity pry into things which the Lord has been pleased to conceal within himself, and scan that sublime eternal wisdom which it is his pleasure that we should not apprehend but adore, that therein also his perfections may appear. Those secrets of his will, which he has seen it meet to manifest, are revealed in his word—revealed in so far as he knew to be conducive to our interest and welfare.
“We have come into the way of faith,” says Augustine: “let us constantly adhere to it. It leads to the chambers of the king, in which are hidden all the treasures of wisdom and knowledge. For our Lord Jesus Christ did not speak invidiously to his great and most select disciples when he said, ‘I have yet many things to say unto you, but ye cannot bear them now,’ (John 16:12). We must walk, advance, increase, that our hearts may be able to comprehend those things which they cannot now comprehend. But if the last day shall find us making progress, we shall there learn what here we could not,” (August. Hom. in Joann). If we give due weight to the consideration, that the word of the Lord is the only way which can conduct us to the investigation of whatever it is lawful for us to hold with regard to him—is the only light which can enable us to discern what we ought to see with regard to him, it will curb and restrain all presumption. For it will show us that the moment we go beyond the bounds of the word we are out of the course, in darkness, and must every now and then stumble, go astray, and fall. Let it, therefore, be our first principle that to desire any other knowledge of predestination than that which is expounded by the word of God, is no less infatuated than to walk where there is no path, or to seek light in darkness. Let us not be ashamed to be ignorant in a matter in which ignorance is learning. Rather let us willingly abstain from the search after knowledge, to which it is both foolish as well as perilous, and even fatal to aspire. If an unrestrained imagination urges us, our proper course is to oppose it with these words, “It is not good to eat much honey: so for men to search their own glory is not glory,” (Prov. 25:27). There is good reason to dread a presumption which can only plunge us headlong into ruin.