8 Who is he that judges not according to the person? He that loves equally. Equal love causes that persons be not accepted. It is not when we honor men in diverse measure according to their degrees that we ought to fear lest we are accepting persons. For where we judge between two, and at times between relations, sometimes it happens that judgment has to be made between father and son; the father complains of a bad son, or the son complains of a harsh father; we regard the honor which is due to the father from the son; we do not make the son equal to the father in honor, but we give him preference if he has a good cause: let us regard the son on an equality with the father in the truth, and thus shall we bestow the honor due, so that equity destroy not merit. Thus we profit by the words of the Lord, and that we may profit, we are assisted by His grace.
Source: Tractates on the Gospel of John (New Advent)