The King James Bible addresses honesty in several passages:
Proverbs 12:22 (KJV)
22 Lying lips are abomination to the LORD: but they that deal truly are his delight.
Ephesians 4:25 (KJV)
25 Wherefore putting away lying, speak every man truth with his neighbour: for we are members one of another.
Exodus 20:16 (KJV)
16 Thou shalt not bear false witness against thy neighbour.
Proverbs 11:3 (KJV)
3 The integrity of the upright shall guide them: but the perverseness of transgressors shall destroy them.
Colossians 3:9-10 (KJV)
9 Lie not one to another, seeing that ye have put off the old man with his deeds; 10 And have put on the new man, which is renewed in knowledge after the image of him that created him: