Jonathan Edwards, in A Divine and Supernatural Light Immediately Imparted to the Soul:
All Moral Knowledge and business Skill from God
God is the author of all knowledge and understanding whatsoever. He is the author of the knowledge that is obtained by human learning: he is the author of all moral prudence, and of the knowledge and skill that men have in their secular business. Thus it is said of all in Israel that were wise-hearted, and skilled in embroidering, that God had filled them with the spirit of wisdom, Exodus 28:3.
Yet Flesh and Blood Reveals It
God is the author of such knowledge; but yet not so but that flesh and blood reveals it. Mortal men are capable of imparting the knowledge of human arts and sciences, and skill in temporal affairs. God is the author of such knowledge by those means: flesh and blood is employed as the mediate or second cause of it; he conveys it by the power and influence of natural means.
This is not Edward’s main point in the sermon — his main point is that apprehension of the truth of the Gospel and the beauty of Christ is given immediately by God (illuminating Scripture), whereas he uses means to bring about moral knowledge and skill.
But this is still a helpful and important point: All knowledge, including your knowledge of how to do your job and be effective in it, ultimate comes from God.