Under Jewish law, when a Jew, and this only applies to Jews, would be stolen as a baby by Achum, or Christians, or Muslims(as continues to this day, in the Islamic world) the child would have the status of Tinok Shenishbah, literally a stolen baby. Such a child is not responsible on his own for following Jewish law, and those Jews who are observant are required as a mitzvah to rescue all such Jews. The Gedolim of previous generations ruled that this category also applied to those Jews raised in irreligious homes. The vast majority of the Jews who dont follow the Torah fall within this category, including Bob Dylan, as he was raised in a irreligious Jewish home.
In fact my own Great-Grandfather Shamai was kidnapped off the streets of Ludmeer in Russia when he was 15 to be forced into the Russian army, this would be a different category than tinok shenishbah, but the practice of kidnapping Jews for some reason or another was widespread in the West until modern times.