Today's Gospel passage records a significant post-resurrection appearance of Jesus to His disciples. It is not merely an appearance, but a substantive interaction. Here again, He breaks bread with them. And again, the encounters are stated to be physical, not merely psychological states or subjective experiences of the disciples. He very clearly shows them how He is not a ghost or apparition. Although in a glorified body, Jesus still eats with them and spends time teaching them. He opens their minds to understand the Scriptures.
I think it is significant that Jesus repeatedly returns to fellowship with the disciples, offering a greeting of peace. He harbors no resentment toward those who abandoned Him. In these intimate teaching moments, Jesus is very clear about His identity and mission. Equally clear is the commission given to the disciples. They are to proclaim repentance for the forgiveness of sins, going forth to the nations. The resurrection of Jesus after His sacrificial death was for the benefit of the world (John 1:29).