以賽亞書 56:6

還有那些與耶和華聯合的外邦人， 要事奉他，要愛耶和華的名， 要作他的僕人－ 就是凡守安息日不干犯， 又持守他 約的人。

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;