Through his travels, Judah was well-acquainted with many Italian humanists and with the Neapolitan Court. Some say he may have met Giovanni Pico della Mirandola while in Florence and composed for him a discourse on the “Harmony of the Skies.” If so, he also probably associated with Elia de Medigo, teacher of Pico della Mirandola, Yohanan Alemanno (a Jewish writer influenced by the Medici court and mysticism and author of "Song of songs"), Giovanni Pontano, Mario Equicola and monk Egidio da Viterbo.