Jesus said: “My sheep hear my voice, and I know them, and they follow me; and I give them eternal life, and they shall never perish, and no one shall snatch them out of my hand. My Father, who has given them to me is greater than all, and no one is able to snatch them out of the Father’s hand. I and the Father are one” (John 10:27–30). These four verses contain the whole of Jesus’s message; it is the nucleus of his Gospel: he calls us to share in his relationship with the Father, and this is eternal life.
– from the book Mother Mary: Inspiring Words from Pope Francis