Jesus presented Himself. Not as a ghost. Not as a spiritual being. He presented himself alive. He did it over and over. He did it for forty days. He did it many different places. God is great and demonstrated he is God by resurrecting his son from the dead.
Jesus is alive!! Jesus lives. Jesus sits at the right hand of the Father, in control of God’s World (Kingdom). That is good news.
After his death, he presented himself alive to them in many different settings over a period of forty days. (Acts 1:4 The Message)