At the root of all spiritual declension backsliding is an inaccurate and unworthy conception of the character of God and an over estimate of man. Matthew 15:9,10 is a reference to Isaiah 29:13, which tells of a time when the leaders in Israel were teaching the fear of the LORD by the precept of men. In our times, like in the days of Israel, something has been lost in the Body of Christ and it is the reverence for a Holy God. Many do not fear Him. They have a Satanic pride and arrogance birthed from a Gospel of Humanism. Men worship a God of their own making; a God who they feel is a means to their own end.