Isaiah 56:5-6

Even to them I will give in My house And within My walls a place and a name Better than that of sons and daughters; I will give them an everlasting name That shall not be cut off. “Also the sons of the foreigner Who join themselves to the LORD, to serve Him, And to love the name of the LORD, to be His servants— Everyone who keeps from defiling the Sabbath, And holds fast My covenant