What does three stones left on your doorstep mean?

Answer 1

Anything unusual like stones, a drinks can, a bottle left on a doorstep or at a gate may be a test by a burglar to see if people are away on holiday. If the stones or whatever are removed the burglar will assume there's someone at home or someone looking after the home.

It could also be a message from someone who's been spying on your home to see how vulnerable it is - e.g. one crumpled drinks can may mean one little old defenceless lady - an easy target for a burglar.

Make sure someone checks your house if you're going to be away.

Answer 2

The Hebrews would put stones on the graves of those of those of ones that were buried in the cemetery's. It is a sign that you are soon to are soon to die