John Climacus

Title: John the Ladder

Alternate names/spellings: Saint

Dates: 525 - 606 (Dates are approximate. ) 

John Climacus was the abbot of the monastery of St. Catherine’s on Mount Sinai, sometime (most likely) in the seventh century. He wrote the Ladder of Divine Ascent as a guide for monks in the monastery and for hermits living in the vicinity.