Gregory the Great, on Isa 28:21

“For the Lord shall stand up as in the mountain of divisions: he shall be angry as in the valley which is in Gabaon: that he may do his work, his strange work: that he may perform his work, his work is strange to him.”

“Hence Isaiah, contemplating our salvation and [Christ's] passion, well said: "That he may do his work, his strange work; that he may perform his work, his work is strange to him." For the work of God is to gather the souls that he created and call them back to the joys of the eternal light. But it is not the work [of] God in his essence to be flogged, to be smeared with spittle, to be crucified, to die and to be buried, but this is the work of a sinful person who deserved all these things for his sins. But [Jesus] himself bore our sins in his own body on the tree. And he who in his own nature always remains incomprehensible deigned to be comprehended in our nature and to be flogged, because if he had not assumed the attributes of our weakness he could never have raised us to the power of his fortitude.… And he does his strange work that he might do his proper work, because insofar as he bore our sins in infirmity he led us who are his creatures to the glory of his fortitude in which he lives and reigns with God the Father in the unity of the Holy Spirit, God, through ages of ages. Amen.”

Imported from an open dataset — not yet checked against the printed edition.