"In the terrible judgments brought upon the ten tribes the Lord had a wise and merciful purpose. That which He could no longer do through them in the land of their fathers He would seek to accomplish by scattering them among the heathen. His plan for the salvation of all who should choose to avail themselves of pardon through the Saviour of the human race must yet be fulfilled; and in the afflictions brought upon Israel, He was preparing the way for His glory to be revealed to the nations of earth. Not all who were carried captive were impenitent. Among them were some who had remained true to God, and others who had humbled themselves before Him. Through these, “the sons of the living God” ( Hosea 1:10 ), He would bring multitudes in the Assyrian realm to a knowledge of the attributes of His character and the beneficence of His law. PK 292.2"
"Yet the number of the children of Israel shall be as the sand of the sea, which cannot be measured nor numbered; and it shall come to pass, that in the place where it was said unto them, Ye are not my people, there it shall be said unto them, Ye are the sons of the living God."
Ellen White directly references Hosea 1:10 in this passage.