Therefore take heed and be not proud, and be humble and low, and trust not too much in yourselves; but put your only trust in Christ our Saviour. And yet you may not utterly set aside the doing of good works; but especially look that you have always oil in readiness for your lamps, or else you may not come to the wedding, but shall be shut out, and thrust into everlasting darkness. This oil is faith in Christ, which if you lack, then all things are unsavory before the face of God: but a great many people are much deceived, for they think themselves to have faith when indeed they have it not. Some peradventure will say, How shall I know whether I have faith or not? Truly you shall find this in you, if you have no mind to leave sin; then sin grieves you not, but you are content to go forward in the same, and you delight in it, and hate it not, neither do you feel what sin is: when you are in such a case, then you have no faith, and therefore are like to perish everlastingly. For that man who is sore sick, and yet feels not his sickness, he is in great danger, for he has lost all his senses; so that man who has gone so far in sin, that he feels his sin no more, is like to be damned, for he is without faith. Again, that man is in good case, who can be content to fight and strive with sin, and to withstand the devil, and his temptations, and calls for the help of God, and believes that God will help him, and make him strong to fight. That man shall not be overcome by the devil. And whosoever feels this in his heart, and so wrestles with sin, may be sure that he has faith, and is in the favour of God.