Jesus continues teaching at the synagogue in Capernaum and now the disciples (not the 12 apostles, but other followers) react to the teaching, grumbling like the Jews did earlier (v.41). Many disciples left Jesus, but the apostles stayed. Jesus asked the apostles if they would leave, and Peter answered with a great confession of faith, saying there was no place to go, but to be with Jesus, in Jesus. This is true for us as well.