Gregory the Great, on Amos 2:13

“Behold, I will screak under you as a wain screaketh that is laden with hay.”

“He sometimes compares himself with deep condescension, on account of our infirmity, to objects without sense, as he says by the prophet, "Behold, I will shriek over you as a cart creaks when laden with hay." For since the life of the carnal is hay (as it is written, all flesh is hay), in that the Lord endures the life of the carnal he declares that he carries hay as a cart. And to creak under the weight of the hay is for him to bear with murmuring the burdens and iniquities of sinners. When therefore he applies to himself very unlike resemblances, we must carefully observe that some things of this kind are sometimes spoken of concerning God, on account of the effect of his doings, but sometimes to indicate the substance of his majesty.”

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