Ambrose of Milan
Catena Aurea · Lukasevangelium 23
And as they led him away, they laid hold upon one Simon, a Cyrenian, coming out of the country, and on him they laid the cross, that he might bear it after Jesus. And there followed him a great company of people, and of women, which also bewailed and lamented him. But Jesus turning unto them said, Daughters of Jerusalem, weep not for me, but weep for yourselves, and for your children. For, behold, the days are coming, in the which they shall say, Blessed are the barren, and the wombs that never bare, and the paps which never gave suck. Then shall they begin to say to the mountains, Fall on us; and to the hills, Cover us. For if they do these things in a green tree, what shall be done in the dry? And there were also two other, malefactors, led with him to be put to death.
Christ therefore bearing His cross, already as a conqueror carried His trophies. The cross is laid upon His shoulders, because, whether Simon or Himself bore it, both Christ bore it in the man, and the man in Christ. Nor do the accounts of the Evangelists differ, since the mystery reconciles them. And it is the rightful order of our advance that Christ should first Himself erect the trophy of His cross, then hand it down to be raised by His martyrs. He is not a Jew who bears the cross, but an alien and a foreigner, nor does he precede but follow, according as it is written, Let him lake up his cross, and follow me. (Matt. 16:24, Luke 9:23.)