Isaiah 56:6-7

And to the foreigners who join themselves to YAHWEH to worship him, those who want to be his servants and love the name of YAHWEH— all who honor the Sabbath and do not disregard it, and who remain true to my covenant—I make this promise: ‘I will welcome you into my holy mountain and make you joyful in my house of prayer. I will accept every sacrifice and offering that you place on my altar, for my house of worship will be known as a house of prayer for all people.’ ”