Luke 24:28-30

Luke 24:28-30. And he made as though he would have gone further. But they constrained him, saying, Abide with us: for it is toward evening, and the day is far spent. And he went in to tarry with them. And it came to pass, as he sat at meat with them, he took bread, and blessed it, and brake, and gave to them.

That was the old sign, well known to them and to him, - that blessing and breaking of the bread.