This charge against Israel is to a people so insensitive to God and truth that they are blind to dishonesty's destructive power. On the national scene, we parade slogans such as "In God We Trust" and "One Nation Under God." Daily in the courts, citizens by the thousands swear on Bibles and then proceed to lie on the witness stand. Millions attend church on Sunday but then conduct business Monday through Saturday in the normal, self-centered, "let's get as much as we can" fashion.
We Americans grew up in this twisted environment and perhaps never really questioned it—we merely accepted it as normal. To some degree, it has conditioned our approach to life. In Isaiah 29, God accuses His people of hypocritically playing games with His truth and of not facing up to its standards in daily life. Jesus quotes verse 13 in Matthew 15:8, charging the scribes and Pharisees with being hypocrites. In both cases, the context is strikingly similar. In both, deceived and hypocritical people mishandle God's revelation. However, after a period of persistent practice, the deception or hypocrisy establishes itself as the way of life!
John W. Ritenbaugh
The Ninth Commandment