Spiritual wisdom consists in finding out the subtleties, policies, and depths of any indwelling sin... to trace this serpent in all its turnings and windings; be able to say, at its most secret actings, 'This is your old way and course; I know what you aim at.'
John OwenWhen sin lets us alone we may let sin alone; but as sin is never less quiet than when it seems to be most quiet, and its waters are for the most part deep when they are still, so ought our contrivances against it to be vigorous at all times and in all conditions, even where there is least suspicion.
John OwenSome relate . . . that the eagle tries the eyes of her young by turning them to the sun; which if they cannot look steadily on, she rejects them as spurious. We may truly try our faith by immediate intuitions of the Sun of Righteousness. Direct faith to act itself, immediately and directly on the incarnation of Christ and His mediation; and if it be not the right kind and race, it will turn its eyes aside to anything else.
John OwenGreat winds and storms help fruit-bearing trees. So also do corruptions and temptations help the fruitfulness of grace and holiness. The storm loosens the earth round its roots so the tree is able to get its roots deeper into the earth, where it receives fresh supplies of nourishment. But only much later will it be seen to bring forth better fruit. So corruptions and temptations develop the roots of humility, self-abasement and mourning in a deeper search for that grace by which holiness grows strong. But only later will there be visible fruits of increased holiness.
John Owen