Isaiah 56:3; Isaiah 56:6

3 Let not the foreigner who has joined himself to the LORD say, "The LORD will surely separate me from His people." Nor let the eunuch say, "Behold, I am a dry tree."

6 "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, every one who keeps from profaning the sabbath And holds fast My covenant;