The burglary happened around 5 a.m. last Thursday, during the snowstorm, at Ziani Brooklyn, located at 367 Avenue U in Gravesend.
Surveillance video showed the man removing his hat before making the sign of the cross.
Then, he grabbed a large brick and smashed a display window.
He quickly grabbed a total of 18 items, police said, and then ran back out through the broken window.
Anyone with information is urged to call CRIMESTOPPERS at 1-800-577-TIPS.
----------
* More Brooklyn news
* Send us a news tip
* Download the abc7NY app for breaking news alerts