John 8:44 You are of your father the devil, and the desires of your father you want to do. He was a murderer from the beginning, and does not stand in the truth, because there is no truth in him. When he speaks a lie, he speaks from his own resources, for he is a liar and the father of it.
1 John 2:4-6 4 He who says, “I know Him,” and does not keep His commandments, is a liar, and the truth is not in him. 5 But whoever keeps His word, truly the love of God is perfected in him. By this we know that we are in Him. 6 He who says he abides in Him ought himself also to walk just as He walked.
Revelation 21:8 8 But the cowardly, unbelieving, abominable, murderers, sexually immoral, sorcerers, idolaters, and all liars shall have their part in the lake which burns with fire and brimstone, which is the second death.”
Psalm 120:2 Deliver my soul, O Lord, from lying lips
And from a deceitful tongue.
Psalm 51:6 Behold, You desire truth in the inward parts,
And in the hidden part You will make me to know wisdom.
Matthew 5:37 But let your ‘Yes’ be ‘Yes,’ and your ‘No,’ ‘No.’ For whatever is more than these is from the evil one.
Proverbs 12:19 The truthful lip shall be established forever,
But a lying tongue is but for a moment.