Adam Clarke on Luke 24:36

And as they thus spake - While the two disciples who were going to Emmaus were conversing about Christ, he joined himself to their company. Now, while they and the apostles are confirming each other in their belief of his resurrection, Jesus comes in, to remove every doubt, and to give them the fullest evidence of it. And it is ever true that, wherever two or three are gathered together in his name, he is in the midst of them.

Peace be unto you - The usual salutation among the Jews. May you prosper in body and soul, and enjoy every heavenly and earthly good! See the notes on Mat 5:9; Mat 10:12.