The teshuva of Arnold B. Ehrlich

The case of Arnold B. Ehrlich, author of Bible commentary מקרא כפשוטו, influencer on young Mordecai Kaplan, is interesting. Having converted to Christianity at a young age, he assisted (or perhaps ghost-wrote) Franz Delitzsch in his Hebrew translation of the New Testament. Apparently he regretted this, so when he arrived in New York the following occurred, as recorded by Gustav Gottheil: