Many people carry a fear that they are not good enough for God. They think they have done something too bad, or come too late, or doubted too much. Jesus answers that fear in one line: whoever comes to me I will never drive away.
The crowd in Capernaum grumbles because Jesus seems too ordinary. They know his family. How can he come from heaven? Jesus does not argue. He says faith begins with the Father drawing people to him, and that he will lose none of those the Father gives him.
That is good news for anyone who feels on the edge of the Church, and for parents worried about children who have drifted. It is not up to us to drag anyone back. God is already drawing them. Our part is to keep the door open, and to trust that Jesus will not turn away anyone who comes.