Isaiah 11:10
8 A baby will play over the hole of a snake; over the nest of a serpent an infant will put his hand. 9 They will no longer injure or destroy on my entire royal mountain. For there will be universal submission to the Lord’s sovereignty, just as the waters completely cover the sea. 10 At that time a root from Jesse will stand like a signal flag for the nations. Nations will look to him for guidance, and his residence will be majestic. 11 At that time the Lord will again lift his hand to reclaim the remnant of his people from Assyria, Egypt, Pathros, Cush, Elam, Shinar, Hamath, and the seacoasts. 12 He will lift a signal flag for the nations; he will gather Israel’s dispersed people and assemble Judah’s scattered people from the four corners of the earth.
Romans 15:12
10 And again it says: “Rejoice, O Gentiles, with his people.” 11 And again, “Praise the Lord all you Gentiles, and let all the peoples praise him.” 12 And again Isaiah says, “The root of Jesse will come, and the one who rises to rule over the Gentiles, in him will the Gentiles hope.” 13 Now may the God of hope fill you with all joy and peace as you believe in him, so that you may abound in hope by the power of the Holy Spirit. 14 But I myself am fully convinced about you, my brothers and sisters, that you yourselves are full of goodness, filled with all knowledge, and able to instruct one another.
Notes and References
"... The fourth citation (Romans 15:12) is from Isaiah 11:10, cited verbatim but without the opening phrase ‘in that day’.21 The reason for the omission is likely to be that a saying which looks towards a future event would not be helpful for Paul, and he intends to demonstrate that Isaiah 11:10 has found its fulfilment in this community and no longer belongs to a future time ... It is notable that the sense of Messiah’s ‘rule’ (i.e. reign in order to accomplish the destruction of the Gentiles) is absent in Paul’s reading ..."
Whittle, Sarah Covenant Renewal and the Consecration of the Gentiles in Romans (pp. 138-139) Cambridge University Press, 2015