Ambrose of Milan
Catena Aurea · Lukasevangelium 22
Ye are they which have continued with me in my temptations. And I appoint unto you a kingdom, as my Father hath appointed unto me; That ye may eat and drink at my table in my kingdom, and sit on thrones judging the twelve tribes of Israel.
The kingdom of God is not of this world, But it is not equality with God, but likeness to Him, unto which man must aspire. For Christ alone is the full image of God, on account of the unity of His Father’s glory expressed in Him. But the righteous man is after the image of God, if for the sake of imitating the likeness of the Divine conversation, He through the knowledge of God despises the world. Therefore also we eat the Body and Blood of Christ, that we may be partakers of eternal life. Whence it follows, Thatye may eat and drink at my table in my kingdom. For the reward promised to us is not food and drink, but the communication of heavenly grace and life.