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:
These people draw near unto me with their mouth, and honor me with their lips; but their heart is far from me.
He answered and said unto them, Well has Isaiah prophesied of you hypocrites, as it is written, This people honor me with their lips, but their heart is far from me.
You have planted them, yea, they have taken root: they grow, yea, they bring forth fruit: you are near in their mouth, and far from their heart.
And they come unto you as the people comes, and they sit before you as my people, and they hear your words, but they will not do them: for with their mouth they show much love, but their heart goes after their covetousness.
Their tongue is as an arrow shot out; it speaks deceit: one speaks peaceably to his neighbor with his mouth, but in his heart he lies in wait.
But when you pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking.
And they have not cried unto me with their heart, when they wailed upon their beds: they assemble themselves for grain and wine, and they rebel against me.
And their words seemed to them as idle tales, and they believed them not.
1 Timothy 6:20
O Timothy, keep that which is committed to your trust, avoiding profane and vain utterances, and oppositions of what is falsely called knowledge:
2 Timothy 2:16
But shun profane and vain utterances: for they will increase unto more ungodliness.
For as he thinks in his heart, so is he: Eat and drink, says he to you; but his heart is not with you.