There is an English proverb which says (saying) “Honesty is the best policy.” It signifies the importance of honesty.
What are the benefits of honesty? If you are honest to others, they will be honest to you in return. When you are sad, they will comfort you. When you are in trouble, they will help you.
There is no enumerating the evils of dishonesty here. In a word, a dishonest man will be looked down upon by others and (be) regarded as a public enemy.