Pro 11:1 A false balance is an abomination to the LORD, but a just weight is his delight.
The book of Proverbs often gets abused by false teachers. This book is not written to guarantee outcome if you do what it says. It’s message is that things overall will go well with you if you keep its words. Think of this, you are not guaranteed safety on the highway no matter how well you drive. Driving well overall gives you better chances of avoiding accidents and danger.
The opening of this chapter begins with warning of what the Lord hates, which is unfairness by deceit. This is seen especially in business practices where morals are often challenged. Back in the day, some type of stones were used to balance the weight for equivalent. If the weight was intentionally marked wrong, it would deprive what was being weighed of it’s true weight and value (fraud). This is why honesty and integrity are at the foundation of social duties, the Lord delights in that.
A godly man must be honest in his dealings with others. God came hard on Laban (Jacob’s father in law) because of how he cheated Jacob of his true worth of his service to him. God is offended when we practice deceit in commerce.