Hacham David Kadosch was born to Rina and Hacham Yosef Kadosch on 2 Tishrei, 5677 (1917), in Marrakesh, Morocco. All of his siblings born before him died at birth. His mother made a pilgrimage to the Tzaddik Rabbi David Liskar's tomb, and following her prayers, Hacham David Kadosch was born and granted life. He was named after Rabbi David Liskar.
Hacham David acquired much of his Torah learning from Hacham Yaacov Dahan. He was preaching in public by the time he was Bar Mitzvah age, and at a young age was the one to repeat Talmud lessons (Shi'urim) to students.
Hacham David Kadosch founded the Ahavat Shalom Society, whose objective was to reconciliate married couples and to establish peaceful relations between individuals in general.
He eventually immigrated to the Holy Land and settled in the city of Nahariya.
Hacham David Kadosch passed away on 2 Tishrei, the second day of Rosh Hashanah, 5749 (1989) and was buried in Jerusalem. After his death, his sons published Lev David – LeHaMagid MeMarrakesh, in which they collected Torah learning they had heard and learned from their father.