Philotheus of Sinai was a Christian monk and writer who lived in Egypt.
[1] Philotheus was the hegumen of Saint Catherine's Monastery (also known as the Monastery of the Burning Bush) in the Sinai Peninsula.
[1] Philotheus of Sinai followed the Sinaitic ascetic tradition of John Climacus.
[1] His writings are similar to those of Hesychius of Sinai.
[3] His 40 Texts on Watchfulness (Greek: νηπτικὰ κεφάλαια, romanized: nēptiká kephálaia) are included in the Philokalia.