Matthew Henry, Matthew Henry's Commentary on the Whole Bible… (1700s)
“ They could not thus eat together unless they were agreed; so that it was a symbol of friendship and fellowship between God and man, and a confirmation of the covenant of peace. 2. It signifies prosperity and all happiness: Peace be to you was as much as, All good be to you; and so the peace-offerings were offered either, (1.) By way of supplication or request for some good that was wanted and desired. If a man was in the pursuit or expectation of any mercy, he would back his prayer for it with a peace-offering, and probably put up the prayer when he laid his hand upon the head of his offering. ”
