human
De Principiis, in its _original_ form, must have been the summary or embodiment of his periodical instructions. But we have numerous hints at what he taught in the several works on Holy Scripture, some lost, some still partly extant, which he composed during these twenty years at Alexandria. It appears that he was in the habit of writing three different kinds of commentary on the Scriptures; first, brief comments or notices, such as he has left in the Hexapla; secondly, scholia, or explanations of some length; and thirdly, regular homilies. But his homilies belong to a later period. At Alexandria he commented St. John's Gospel (a labor that occupied him all his life), Genesis, several of the Psalms, and the
gpt
Canticle of Canticles,