c. 356–360 · Hilary of Poitiers, On the Trinity (De Trinitate) 10.55
Again, how great a mystery of word and act it is that Christ wept, that His eyes filled with tears from the anguish of His mind. Whence came this defect in His soul that sorrow should wring tears from His body? What bitter fate, what unendurable pain, could move to a flood of tears the Son of Man Who descended from heaven? Again, what was it in Him which wept? God the Word? or His human soul? For though weeping is a bodily function, the body is but a servant; tears are, as it were, the sweat of the agonised soul.