Migdol David is homilies on Genesis by R. David ben Nathan Gruenhut (17th–18th centuries). It is set in a single column in rabbinic type, excepting headers and initial words, which are in square type. The text, according to the title page, is according to the order of the Torah, Mishnah, Talmud, Rashi, Tosafot, and Midrash Aggadah. R. Gruenhut was a German talmudist and kabbalist. In 1682, he printed R. Hayyim Vital's Sefer ha-Gilgulim, but was prevented from distributing it by the rabbinate of Frankfort, which opposed kabbalistic works because of the danger of Shabbateanism. Two years later, however, while at Heimerdingen, he published it again, this time through a Christian printer in Frankfort. After serving as rabbi for several years in neighboring towns (Idstein, Aue, and perhaps also Heimerdingen), he returned to Frankfort, becoming one of the scholars in the bet ha-midrash founded by R. David Oppenheim. R. Gruenhut also published the Sefer Hasidim of R. Judah he-Hasid with his own commentary (Frankfort, 1712) and in the following year R. Samuel Uceda’s Midrash Shemu’el (Frankfort, 1713). On friendly terms with Eisenmenger and Schudt before they published their anti-Semitic works, he wrote an adulatory preface to the former's edition of the Bible. At the end of the volume are R. Gruenhut’s novellae on Megillah, with new foliation but still under the title Migdol David.
הקדמת המחבר חתומה בתאריך: טבת תס"ג. ח דף: טוב רואי. עב דף: מגדול דוד. ד דף: ביאור בתוספות במגילה ובקידושין. עיין: ווינער, עמ' 547, מס' 4492.