Found a great deal of money in an old HVAC duct

What would you do if you discovered a pile of money that nobody knew was missing? I don’t mean stealing from a person, which I consider immoral in every case.

I am not a thief, and was raised with a very strict religious upbringing.

In this specific case, I am not taking money from an individual. I found the money, and to my comprehension it has never been reported as being stolen or missing. Should I do the legal thing, and report the money to the cops? Then the cops would take it, and I could sleep easy knowing I did the right thing, but I lose all the money. I was working to take down a series of broken HVAC ducts in an old building downtown. The site had been empty for ten years, but the neighborhood officials needed all the HVAC systems and HVAC ducts stripped out of it. In a single 1 of these old HVAC ducts I found a bundle of old bills wrapped in plastic. Based on the dates I found on the bills, I’d say it’s been in the HVAC duct for at least ten or 15 years. I make fine money as an HVAC tech, but this was enough to help myself and others for a long time to come. Which leads myself and others back to my original question – should I keep it? If I hadn’t found it and taken it to my home it would have sat inside that HVAC ducts until the building was demolished, and it might have been lost forever. I will honestly go back to work at the HVAC service on Saturday, and pretend that I didn’t find anything.

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