In today’s reading Jesus contrasts his impending departure with the permanence of the gift of the Holy Spirit. Jesus will leave to return to the Father, but the Holy Spirit will remain with the disciples. Through the gift of the Holy Spirit, the disciples will come to know and appreciate the unity of the Son and the Father. They will also understand that they too participate in the communion between the Father and the Son: “On that day you will realize that I am in my Father and you are in me and I in you” (John 14:20). Today’s reading is one example of the contrast that John’s Gospel presents between the community of disciples, to whom God will reveal himself, and the unbelieving world, which will remain in darkness. The unbelieving world cannot accept the “Spirit of truth,” whom the disciples will receive. Only through the Spirit will God’s revelation and love be known.