'Inwardly' in the Bible

They consult only to throw him down from his high position [to dishonor him];They delight in lies.They bless with [the words of] their mouths,But inwardly they curse. Selah.

“As for Me, this is My covenant with them,” says the Lord: “My Spirit which is upon you [writing the law of God on the heart], and My words which I have put in your mouth shall not depart from your mouth, nor from the mouths of your [true, spiritual] children, nor from the mouth of your children’s children,” says the Lord, “from now and forever.”