Nature or Disease?

Under the Gospel He looks not upon the weakness of saints as their wickedness, and therefore He pities them. Sin makes those who are under the law the objects of God’s hatred. Sin in a believer makes him the object of God’s pity. Men, you know, hate poison in a snake, but pity it in a man. In the one it is their nature, in the other their disease. Sin in a wicked man is as poison in a snake; God hates it and him; it is the man’s nature. But sin in a child of God is like poison in a man; God pities him. He pities the saints for sins and infirmities, but hates the wicked. It is the nature of the one, the disease of the other.
True Christian Freedom by Samuel Bolton