Zosimas flourished between 475 and 525, from the period just after the fourth Ecumenical Council (in 451) until around the time of the great Gaza elders, Barsanuphius, John and Dorotheus. He is mentioned several times by Dorotheus of Gaza, who knew him personally and visited him as his younger contemporary and compatriot. Dorotheus may in fact be the compiler of the Reflections of Abba Zosimas.