Daniel was in a foreign, hostile environment — and he outperformed everyone around him. Not because he was loudly religious, but because his work was excellent. That excellence opened doors no sermon could have.
Excellence is your first evangelism tool. A business that consistently delivers on its promises, treats people with dignity, and maintains integrity under pressure is already saying something about the God behind it.
Matthew 5:16 doesn't say talk about your good deeds — it says let them be seen. People should observe your business and see something different: a quality of service and consistency of character that makes them ask why.
Your business reputation is your witness. Guard it accordingly.