The Institutes of the Christian Religion (best navigation w/Direct Verse Jump)

by John Calvin

What seems to us contingence, faith will recognise as the secret impulse of God. The reason is not always equally apparent, but we ought undoubtedly to hold that all the changes which take place in the world are produced by the secret agency of the hand of God. At the same time, that which God has determined, though it must come to pass, is not, however, precisely, or in its own nature, necessary. We have a familiar example in the case of our Saviour’s bones. As he assumed a body similar to ours, no sane man will deny that his bones were capable of being broken and yet it was impossible that they should be broken (John 19:33, 36). Hence, again, we see that there was good ground for the distinction which the Schoolmen made between necessity, secundum quid, and necessity absolute, also between the necessity of consequent and of consequence. God made the bones of his Son frangible, though he exempted them from actual fracture; and thus, in reference to the necessity of his counsel, made that impossible which might have naturally taken place.