Honest is the best policy

Better a little with righteousness
than much gain with injustice.

In his heart a man plans his course,
but the LORD determines his steps.

Proverbs 16:8,9 NIV


To do justice and judgment is more acceptable to the LORD than sacrifice.

Proverbs 21:3 KJV


Thus says the LORD:

"Keep justice, and do righteousness,
for soon my salvation will come,
and my deliverance be revealed.
Blessed is the man who does this,
and the son of man who holds it fast,
who keeps the sabbath, not profaning it,
and keeps his hand from doing any evil."

Isaiah 56:1,2 RSV


You shall not have in your bag differing weights, a large and a small. You shall not have in your house differing measures, a large and a small. You shall have a full and just weight; you shall have a full and just measure, that your days may be prolonged in the land which the LORD your God gives you.

Deuteronomy 25:13-15 NASB