Charles Ellicott Commentary Hosea 2:23

"And I will sow her unto me in the earth; and I will have mercy upon her that had not obtained mercy; and I will say to them that were not my people, Thou art my people; and they shall say, [Thou art] my God." — Hosea 2:23 (ASV)

St. Paul considers this great prediction to be truly fulfilled when, by the acceptance of the Divine hope of Israel, both Jews and Gentiles shall be called the children of the living God (Romans 9:25–26).