The Son of Man

'Et interrogabat discipulos suos, dicens: 'Quem dicunt homines esse Filium hominis?'  Non dixit, quem me dicunt esse homines, sed Filium hominis: ne jacanter de se quaerere videretur. Et quod ubicumque scriptum est in veteri Testamento, filius hominis in Hebraeo positum sit, filius Adam. Ut est illud, quod in psalmo legimus: Filii hominum usquequo gravi corde , quod in Hebraei dicitur, filii Adam. Pulchre autem interrogat: Quem dicunt homines esse Filium hominis? quia qui de Filio hominis loquntur, homines sunt: qui vero divinitatem ejus intelligunt, non homines, sed dii appellantur. Sanctus Hieronymus, Commentaria in Matthaeum, Liber III, Caput XVI Source: Migne PL 25.115a

And He asked His disciples saying, 'Who do men say the Son of Man is?' 1 He did not ask who do men say I am, but 'the Son of Man,' lest He seem to be boasting about Himself with His question. And the name which is everywhere written in the Old Testament 'Son of Man' in Hebrew is 'Son of Adam.' As when in the Psalm it reads 'Sons of men, how long will your hearts be heavy?' 2 which in Hebrew reads 'Sons of Adam'. The question, 'Who do men say that the Son of Man is?' is put beautifully, for they who speak of the Son of Man, are men, but they who understand His Divine nature are called not men but Gods. 3 Saint Jerome, Commentary on Matthew, Book 3, Chapter 16 1 Mt 16.13 2 Ps 4.3 3 Ps 81.6