In a heist of biblical proportions, thieves pilfered about $30 million in cash from a Los Angeles-area vault on Easter Sunday — and no one even noticed the empty vault until the next morning.

The burglary took place Sunday night at the GardaWorld facility in Sylmar, which handles cash for several businesses in the area, sources told Eyewitness News.

The thieves were so stealthy that the safe showed no signs of a break-in from the outside — and the operators of the business were none the wiser until they opened it on Monday, the Los Angeles Times said.

The thieves accessed the facility through the roof and managed to avoid setting off any alarms when they got into the money storage area, officials familiar with the investigation told Eyewitness News.

Footage of the facility on Wednesday showed what appeared to be a gaping hole in the side of the building with a pile of debris next to it — though it was unclear if that damage stemmed from the break-in, the outlet said.

Very few people would have known how much cash was stored at the nondescript facility, the LA Times noted.

The elaborate scheme was likely executed by a crew of seasoned burglars, sources told the paper.

The heist is one of the largest in Los Angeles history and also outpaced all of the region’s armored car thefts, Los Angeles Police Department Cmdr. Elaine Morales confirmed to the outlet.

As of Thursday, the incident is under investigation by both the Los Angeles Police Department and the FBI.

The LAPD and the GardaWorld facility did not immediately return The Post’s request for comment.

The Easter Sunday theft comes nearly two years after up to $100 million in jewels and other valuables were taken from an armored big rig at a Grapevine truck stop.

The thieves stuffed 20 large bags full of gems during the 27-minute robbery that took place during the driver’s nap and meal break.

That crime remains unsolved.