" His composition," we read, " was stiff," but he was imbued with the substance of his authors; and a contemporary who was in the sixth form with him recorded that " when there were thrilling passages of Virgil or Homer, or difficult passages in the Scriptores Graeci, to translate, he or Lord Arthur Hervey was generally called up to edify the class with quotation or translation."
The intrinsic improbabilities of the narrative, if taken as direct history, are also great: Jesus' deliberate delay of two days to secure His friend's dying, and His rejoicing at the death, since thus He can revivify His friend and bring His disciples to believe in Himself as the Life; His deliberate weeping over the death which He has thus let happen, yet His anger at the similar tears of Lazarus's other friends; and His praying, as He tells the Father in the prayer itself, simply to edify the bystanders: all point to a doctrinal allegory.
Many of his general exhortations are but very indirectly connected with the practical issue to which the epistle is directed, and it is very probable that he was drawing largely upon the homiletical material with which he was accustomed to edify his fellow-Christians at Rome.
Edify for others, that's why he says "He that prophesies edifies the church."
For example, the Acta of many of the early martyrs survive intact and are very edifying and very moving.