Isaiah 56:5-6

To them I will give in My house and within My walls a memorial, And a name better than that of sons and daughters; I will give them an everlasting name which will not be cut off. ¶“Also the foreigners who join themselves to the LORD, To minister to Him, and to love the name of the LORD, To be His servants, everyone who keeps the Sabbath without profaning it And holds fast to My covenant [by conscientious obedience]