Isaiah 56:6
4 For this is what the Lord says: “For the eunuchs who observe my Sabbaths and choose what pleases me and are faithful to my covenant, 5 I will set up within my temple and my walls a monument that will be better than sons and daughters. I will set up a permanent monument for them that will remain. 6 As for foreigners who become followers of the Lord and serve him, who love the name of the Lord and want to be his servants—all who observe the Sabbath and do not defile it, and who are faithful to my covenant— 7 I will bring them to my holy mountain; I will make them happy in the temple where people pray to me. Their burnt offerings and sacrifices will be accepted on my altar, for my temple will be known as a temple where all nations may pray.” 8 The Sovereign Lord says this, the one who gathers the dispersed of Israel: “I will still gather them up.”
Zechariah 2:11
9 Yes, look here, I am about to punish them so that they will be looted by their own slaves.” Then you will know that the Lord of Heaven’s Armies has sent me. 10 “Sing out and be happy, Zion my daughter! For look, I have come; I will settle in your midst,” says the Lord. 11 “Many nations will join themselves to the Lord on the day of salvation, and they will also be my people. Indeed, I will settle in the midst of you all. Then you will know that the Lord of Heaven’s Armies has sent me to you. 12 The Lord will take possession of Judah as his portion in the holy land and he will choose Jerusalem once again. 13 Be silent in the Lord’s presence, all people everywhere, for he is being moved to action in his holy dwelling place.”
Notes and References
"... Israel’s exodus out of Egypt is shown to have continuing universal significance and becomes “a catalyst for the proclamation of God’s name throughout the world.” 3 The pattern of sacred history thus culminates with the prospect of the nations streaming to Yahweh’s house, with Israel, as the seed of Abraham, mediating divine blessing to all the families of the earth. Even foreigners, Yahweh declared, “I will bring to my holy mountain, and make them joyful in my house of prayer ... for my house will be called a house of prayer for all the peoples” (Isaiah 56:6-7) ... Far from an obscure hope, Yahweh gave the same message to Zechariah a few hundred years later (c. 520 BC): “Many nations will be joined to Yahweh in that day, and they will become my people, and I will dwell in your midst” (Zechariah 2:11; see also Psalm 87:2-6). Wondrously, the nations will be embraced by Yahweh in a relationship akin to Israel’s: “my people.” As with Israel, the nations will experience an exodus of deliverance that will lead to a covenant relationship with Yahweh ..."
Morales, L. Michael Exodus Old and New: A Biblical Theology of Redemption (p. 153, 162) IVP Academic, 2020