St Gregory Nazianzen in his poem Against Apollinaris, 50 sq., asks how two things so far apart as Deity and humanity could be united, and replies:
'Tis mystery, I but conjecture make. Divinity with flesh unmeet to blend: But thinking Soul, as 'twere a frontier power, Image of God, in body domiciled, Is apt to mediate between the twain. The Godhead then conjoined itself with Soul, And so assumed dimensions of a man.
Of God and His Creatures: 4.44