We all want God to give unity of faith to the world. But you are confusing things
The reconciliation of people is one thing, while the reconciliation of religions is another. Christianity requires all of us to love everyone with all our hearts, whatever faith they may have.
At the same time we are ordered to keep our faith and doctrines intact. As Christians you must be merciful to the while world, to all people. Even your life you should give on their behalf.