Deuteronomy 16
5 Thou mayest not sacrifice the passover-offering within any of thy gates, which the LORD thy God giveth thee;
6 but at the place which the LORD thy God shall choose to cause His name to dwell in...
OK, Now the Deuteronomy clears THAT up! LOL
In John 4, The Samaritan Woman gets into a big discussion about this very thing.
So while the ORIGINAL Passover Lamb was sacrificed one per household, later, it was to be in the tabernacle, or the temple.
OR perhaps, to be interpreted,
OUTSIDE the GATES.
(not debating, as we do not debate on this thread, just musing over the new information you have shared. Thank you!)