Lucas 24:39

Anyone wishing to prove his real presence might offer his hands and feet for inspection, as Jesus did. However the Roman soldiers had pierced Jesus’ hands and feet with nails so the wounds would have identified Him as Jesus (John 20:25-27). Jesus claimed, "It is I Myself" (Gr. ego eimi autos, cf. ego eimi, which John recorded Jesus saying frequently in his Gospel). He encouraged His followers to touch Him as well as to look at Him and to satisfy their senses that His body was real. His human body had flesh and bones, which ghosts do not have. The phrase "flesh and blood" is a similar expression that also describes a physical body (cf. 1 Corinthians 15:50).