There are true Christians who are so much given to what is called the ‘experimental’ in religion that they feed to a very large extent upon their own experience. This type of piety can become nauseating. When analyzed it is seen to be dishonoring to Christ and detrimental to true religion. It is true that piety produces experience, and the deeper the piety the deeper and richer will be the experience. But the point is to be stressed is that piety does not feed on experience. Piety feeds on Christ, on his truth, on the mysteries of God’s revelation, and on the promises which are all yea and amen in Christ. —John Murray, Some Necessary Emphases in Preaching