Isaiah 56:4-7

4For thus saith the LORD to the eunuchs that keep my sabbaths, and choose the things that please me, and take hold of my covenant; 5Even to them will I give in my house and within my walls a place and a name better than of sons and of daughters: I will give them an everlasting name, that shall not be cut off. 6Also the sons of the foreigner, 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 profaning it, and taketh hold of my covenant; 7Even 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 my altar; for my house shall be called an house of prayer for all people.