Therefore the Lord said,
Since this people draw near me with their mouth, and with their lips do honor me, but have removed their heart far from me, and their fear toward me is taught by the precept of men:
All Commentaries on Isaiah 29:13 Go To Isaiah 29
Jerome
AD 420
But if we are impure and unfaithful, all things are profane to us, either due to heresy inhabiting our hearts or to a sinful conscience. Moreover, if our conscience does not accuse us and if we have pious trust in the Lord, “we will pray with the spirit and we will pray with the mind; we will sing with the spirit and sing with the mind,” and we will be far removed from those about whom it is here written: “their minds and consciences are polluted.”
“They claim to know God, but they deny him with their deeds. They are accursed, disobedient and repelled by every good deed.” It is about these persons whose minds and consciences are polluted, who claim to know God but deny him with their deeds, that it is said in Isaiah: “This people honors me with their lips, but their heart is far from me.” See how they honor God with their lips while fleeing from him in their heart; professing belief in God with words, their works deny him.
