"Do and observe all things whatsoever they tell you,
but do not follow their example.
For they preach but they do not practice."  (Mt 23:3)

In the ordination rite for deacons, the bishop gives the Book of the Gospels to the one ordained and says: "Receive the Gospel of Christ.  Believe what you read, teach what you believe, and put into practice what you teach." A good reminder for us all.