“Now could it possibly happen that the sun be smote or sliced, which otherwise encompasses the axe and the tree? So therefore in Christ, his body indeed is the tree, the axe His passion, the sun is His Godhead. Christ suffered [endured His Passion], without His Divinity suffering any diminution on account of his Passion. [Latin: Num fieri potest ut sol feriatur aut caedatur, qui caeteroquin securim et arborem prorsus circumambit? Sic igitur in Christo, corpus quidem est arbor, securis passio, sol est divinitas. Passus est Christus, quin divinitas diminutionem ullam propter passionem perpessa est.]” Pope St. Sylvester I   (Fragment quoted by Migne, PL.)