The Church and The Strangers

Isaiah 56:6-7 KJV Also the sons of the stranger, that join themselves to the Lord , to serve him, and to love the name of the Lord , to be his servants, every one that keepeth the sabbath from polluting it, and taketh hold of my covenant; [7] Even them will I bring to my holy mountain, and make them joyful in my house of prayer: their burnt offerings and their sacrifices shall be accepted upon mine altar; for mine house shall be called an house of prayer for all people.