Here is the most widely recognized quote from St. Ireneaus of Lyon, a disciple of Polycarp of Smyrna, who was an disciple of Apostle John.
You are fully human as you live in God & God lives in you. Otherwise, you’re missing much about what it means to be a human being. Therefore, the goal of our lives is to live as fully as possible in God. That is the journey you are traveling.
For the context of this marvelous quote, click here.