Gregory the Great
Catena Aurea · Lukasevangelium 14
And there went great multitudes with him: and he turned, and said unto them, If any man come to me, and hate not his father, and mother, and wife, and children, and brethren, and sisters, yea, and his own life also, he cannot be my disciple. And whosoever doth not bear his cross, and come after me, cannot be my disciple.
(in Hom. ut sup.) But it may be asked, how are we bid to hate our parents and our relations in the flesh, who are commanded to love even our enemies? But if we weigh the force of the command we are able to do both, by rightly distinguishing them so as both to love those who are united to us by the bond of the flesh, and whom we acknowledge our relations, and by hating and avoiding not to know those whom we find our enemies in the way of God. For he is as it were loved by hatred, who in his carnal wisdom, pouring into our ears his evil sayings, is not heard.