Faithfulness towards God and his guidance in history. Dialogue around the Scripture with open-mindedness and without mistrust. From the past centuries, we have notable cases of discussions between Jews, Christians and Muslims about Scriptural passages and topics. These examples can provide inspiration for today. We have to learn much more one on the other and we have to learn from God by letting the Scripture be our judge.
Sharing is the only solution.
If the three religions have so much in common, and have a place and a function in God's plan for humanity, then sharing is imperative. Again, looking at the past centuries we find examples of sharing places of worship. With the help of God, this attitude can bring the three religions closer to mutual understanding, which alone makes a solution possible. This proposal may seem irenical and simplistic. It is rather highly demanding.