Isaiah 56:4

²Blessed is the man who does this, and the son of man who holds it fast; who keeps the Sabbath from profaning it, and keeps his hand from doing any evil.”

³Neither let the foreigner, who has joined himself to Yahweh, speak, saying, “Yahweh will surely separate me from his people”; neither let the eunuch say, “Behold, I am a dry tree.”

⁴For thus says Yahweh, “To the eunuchs who keep my Sabbaths, and choose the things that please me, and hold fast my covenant:

⁵to them I will give in my house and within my walls a memorial 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 foreigners who join themselves to Yahweh, to minister to him, and to love Yahweh’s name, to be his servants, everyone who keeps the Sabbath from profaning it, and holds fast my covenant;