If you fulfill the royal law according to the scripture,
You shall love your neighbor as yourself,
you do well:
Read Chapter 2
Andreas of Caesarea
AD 637
Just as you want to be treated justly and properly by your neighbor, so you must behave toward him as you would towards your kinsman and child of God. What our Savior said about this is absolutely right: "Do unto others as you would have them do unto you. For this is the law and the prophets. (Mt 7:12)"
If then you fulfil the royal law.thou shalt love you do well. By these words, the apostle explains what he had said before of the particular respect paid to rich and powerful men, that if these were no more than some exterior marks paid them without any injustice or interior contempt of such as were poor, so that they took care to comply with that royal precept given to every one by Almighty God, the King of kings, thou shalt love thy neighbour, that is, every one without exception, as thyself; in this you do well; and the respect of persons was less blameable. (Witham)
Love your neighbor means three different things. The first is corporal, that is, the literal sense of the words. The second is spiritual, according to which we love those close to us even though we may be absent from them. The third is contemplative, by which love itself is beheld. But we have to understand that one leads to another. The corporal inspires us to go on to the spiritual, and that in turn lifts us up to the contemplative. The spiritual may sometimes regress to the merely corporal, but the contemplative never fails us. The corporal and spiritual forms of love are common to human beings and have analogies in animals, but the contemplative is reserved for humans alone.