St. John Paul II briefly mentions how prayer, gratitude and hope are the three keys to establishing Christian unity.
St. John Paul II was one of the biggest advocates for Christian unity during his pontificate. He worked tirelessly to talk with Christians from all corners of the globe and to work with them to find common ground.
He wrote extensively on this topic in his encyclical Ut Unum Sint, reflecting on the history of Christian unity and looking forward in hope to the day when "all will be one."
At the end of his encyclical, St. John Paul II briefly reflects on three keys he saw to the eventual establishment of Christian unity.
1Prayer
2Gratitude
3Hope
If we want to work towards ultimate Christian unity, we need to devote ourselves to prayer, constantly give thanks, and be beacons of hope to the world.
Unity will not be "our" work, but will be, in the end, the work of God.