You may know a sheep from a swine, when both have fallen into the same mire, and are, in fact, so bemired, that neither by coat nor color can the one be distinguished from the other.
How then distinguish them? Nothing more easy!
The sheep, a type of the godly, strives and struggles to get out of the muck.
But the swine, in circumstances agreeable to its nature, wallows in the filth.
What the true proverb says has happened to them: The dog returns to its own vomit, and the swine, after washing herself, returns to wallow in the mire. – 2 Peter 2:22
For I delight in the law of God, in my inner being, but I see in my members another law waging war against the law of my mind and making me captive to the law of sin that dwells in my members. Wretched man that I am! Who will deliver me from this body of death? Thanks be to God through Jesus Christ our Lord! – Romans 7:22- 25
-Thomas Guthrie, 1803-1873