In his scholarly work, "The Tongue of Theology," Khaled Fahmy presents a profound linguistic study exploring the lexicon of Jewish and Christian religious concepts within the Arabic language. This comprehensive analysis delves into the classification and functions of sacred terminology, examining how theological ideas from Judaism and Christianity are articulated, translated, and integrated into Arabic. Fahmy meticulously investigates the linguistic mechanisms and semantic fields that shape the religious discourse of these two faiths in an Arabic context, offering invaluable insights for linguists, theologians, and researchers of interfaith dialogue and comparative religion.