Isaya 56:6

Wageni wanaoambatana na Bwana ili kumtumikia, kulipenda jina la Bwana, na kumwabudu yeye, wote washikao Sabato bila kuinajisi na ambao hushika sana agano langu:

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;