Shortly after feeding 5,000 men with five barely loaves and two small fish, Jesus told the crowd, "The words I speak to you are spirit and they are life. But there are some of you who do not believe" (John 6:63-64).
John tells us, "From that time many of his disciples went back and walked with him no more" (John 6:64).
Following Jesus' signs and wonders is not the same as following Jesus.