Sirach 20:24

24 A lie is a foul blot in a man, yet it is continually in the mouth of the untaught.

Sirach 20:24 In-Context

22 There is that destroyeth his own soul through bashfulness, and by accepting of persons overthroweth himself.
23 There is that for bashfulness promiseth to his friend, and maketh him his enemy for nothing.
24 A lie is a foul blot in a man, yet it is continually in the mouth of the untaught.
25 A thief is better than a man that is accustomed to lie: but they both shall have destruction to heritage.
26 The disposition of a liar is dishonourable, and his shame is ever with him.

The Brenton translation of the Septuagint is in the public domain.