CLAIM: Israel’s restoration at the end of the age is when all of ethnic Israel is gathered to the Messiah and to the land (vv. 14-20). This was partially fulfilled after the Babylonian captivity as well as in 1948.
False.
Historically fulfilled. As prophesied, God put a new heart and a new spirit in His people, and those who were devoted to vile images and idols would be destroyed. Those who believed in Christ, through repentance unto faith, were saved. Those who continued in their stubbornness, equated with idolotry by Samuel, were destroyed finally in 70AD in the destruction of Israel, and again at the Great Winepress in Betar in 135AD (see here for further development of this topic).