But when the Pharisees had heard that he had put the Sadducees to silence, they were gathered together. Then one of them, which was a lawyer, asked him a question, tempting him, and saying, Master, which is the great commandment in the law? Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind. [Deuteronomy 6:5] This is the first and great commandment. And the second is like unto it, Thou shalt love thy neighbour as thyself. On these two commandments hang all the law and the prophets.
And one of the scribes came, and having heard them reasoning together, and perceiving that he had answered them well, asked him, Which is the first commandment of all? And Jesus answered him, The first of all the commandments is, Hear, O Israel; The Lord our God is one Lord: And thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind, and with all thy strength: this is the first commandment. [Deuteronomy 6:5] And the second is like, namely this, Thou shalt love thy neighbour as thyself. There is none other commandment greater than these. And the scribe said unto him, Well, Master, thou hast said the truth: for there is one God; and there is none other but he: And to love him with all the heart, and with all the understanding, and with all the soul, and with all the strength, and to love his neighbour as himself, is more than all whole burnt offerings and sacrifices. And when Jesus saw that he answered discreetly, he said unto him, Thou art not far from the kingdom of God. And no man after that durst ask him any question.
And, behold, a certain lawyer stood up, and tempted him, saying, Master, what shall I do to inherit eternal life? He said unto him, What is written in the law? how readest thou? And he answering said, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy strength, and with all thy mind; and thy neighbour as thyself. [Deuteronomy 6:5] And he said unto him, Thou hast answered right: this do, and thou shalt live. But he, willing to justify himself, said unto Jesus, And who is my neighbour? And Jesus answering said, A certain man went down from Jerusalem to Jericho, and fell among thieves, which stripped him of his raiment, and wounded him, and departed, leaving him half dead. And by chance there came down a certain priest that way: and when he saw him, he passed by on the other side. And likewise a Levite, when he was at the place, came and looked on him, and passed by on the other side. But a certain Samaritan, as he journeyed, came where he was: and when he saw him, he had compassion on him, And went to him, and bound up his wounds, pouring in oil and wine, and set him on his own beast, and brought him to an inn, and took care of him. And on the morrow when he departed, he took out two pence, and gave them to the host, and said unto him, Take care of him; and whatsoever thou spendest more, when I come again, I will repay thee. Which now of these three, thinkest thou, was neighbour unto him that fell among the thieves? And he said, He that showed mercy on him. Then said Jesus unto him, Go, and do thou likewise.
If one does not love God with all his heart and with all his soul, how can he care wholesomely and guilelessly for the love of his brothers, since he is not fulfilling the love of the One on whose account he has a care for the love of his brothers? The person in this condition, who has not given his whole soul to God and has not participated in his love, the craftsman of evil finds disarmed and easily overpowers. .
To humanity it was said, “Love the Lord your God,” yet the love of God is not instilled in the hearts of all. Deafer are the hearts of people than the hardest rock. The earth, in compliance with its Author, furnishes us with fruit which is not owed to us. We deny the debt when we do not give homage to the Author. .
Now one who loves undoubtedly believes, and by believing each one begins to love. Finally, “Abraham believed,” and thus he began to love. He did not believe in part but believed all things. Otherwise he could not possess full charity, since Scripture says, “Charity believes all things.” ()..
It is a noble thing to do one’s kindnesses and duties toward the whole of the human race. But it is ever more seemly that you should give to God the most precious thing you have, that is, your mind, for you have nothing better than that. When you have paid your debt to your Creator, then you may labor for humanity, to show them kindness and to give help. Then you may assist the needy with money, or by some duty or some service that lies in the way of your ministry; by money to support him; by paying a debt, so as to free him that is bound; by undertaking a duty, so as to take charge of a trust, which he fears to lose, who has put it by in trust. .
Therefore the supreme and true wisdom is in that first commandment: “You shall love the Lord your God with your whole heart and with your whole soul.” From this it follows that wisdom is love of God, which is “poured forth in our hearts,” not otherwise than “by the Holy Spirit who is given to us.” But “the fear of the Lord is the beginning of wisdom,” and “there is no fear in love, but perfect love casts out fear.”
The number three has an intrinsic relation to the mind. This may be understood from the text in which we are commanded to love God in a threefold manner, with the whole heart, with the whole soul, with the whole mind.
For while there remains any remnant of the lust of the flesh, to be kept in check by the rein of continence, God is by no means loved with all one’s soul. For the flesh does not lust without the soul, although it is the flesh which is said to lust, because the soul lusts carnally. In that perfect state the just man shall live absolutely without any sin, since there will be in his members no law warring against the law of his mind. But wholly will he love God, with all his heart, with all his soul and with all his mind, which is the first and chief commandment.
Somebody asked Antony, ‘What shall I do in order to please God?’ He replied, ‘Do what I tell you, which is this: wherever you go, keep God in mind; whatever you do, follow the example of holy Scripture; wherever you are, stay there and do not move away in a hurry. If you keep to these guide-lines, you will be saved.’
Gregory said, ‘God asks three things of anyone who is baptized: to keep the true faith with all his soul and all his might; to control his tongue; to be chaste in his body.’
[AD 60] Matthew on Deuteronomy 6:5