Isaiah 29:13

13 The Lord said: Because these people draw near with their mouths and honor me with their lips, while their hearts are far from me, and their worship of me is a human commandment learned by rote;

Isaiah 29:13 In-Context

11 The vision of all this has become for you like the words of a sealed document. If it is given to those who can read, with the command, "Read this," they say, "We cannot, for it is sealed."
12 And if it is given to those who cannot read, saying, "Read this," they say, "We cannot read."
13 The Lord said: Because these people draw near with their mouths and honor me with their lips, while their hearts are far from me, and their worship of me is a human commandment learned by rote;
14 so I will again do amazing things with this people, shocking and amazing. The wisdom of their wise shall perish, and the discernment of the discerning shall be hidden.
15 Ha! You who hide a plan too deep for the Lord, whose deeds are in the dark, and who say, "Who sees us? Who knows us?"
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.