But I say to you, Love your enemies and pray for those who persecute you, so that you may be sons of your Father who is in heaven. For he makes his sun rise on the evil and on the good, and sends rain on the just and on the unjust. For if you love those who love you, what reward do you have? Do not even the tax collectors do the same? And if you greet only your brothers, what more are you doing than others? Do not even the Gentiles do the same? You therefore must be perfect, as your heavenly Father is perfect.
The disciples are to love their enemies in order that they may be the sons of their Father; they must imitate their Father. Clearly implied is the thought that God, the Father, loves his enemies and that it is because he loves his enemies that he makes his sun rise upon them and sends them rain. This is just saying that the kindness bestowed in sunshine and rain is the expression of divine love, that back of the bestowal there is an attitude on the part of God, called love, which constrains him to bestow these tokens of his lovingkindness. This informs us that the gifts bestowed by God are not simply gifts which have the effect of good and blessing to those who are the recipients but that they are also a manifestation or expression of lovingkindness and goodness in the heart or will of God with reference to those who are the recipients. The enjoyment on the part of the recipients has its ground as well as its source in this lovingkindness of which the gifts enjoyed are the expression. In other words, these are gifts and are enjoyed because there is in a true and high sense benevolence in the heart of God.
These conclusions are reinforced by verse 48. There can be no question regarding the immediate relevance of verse 48 to the exhortation of verses 44-47, even though it may have a more comprehensive reference. And verse 48 means that what has been adduced by way of divine example in the preceding verses is set forth as epitomizing the divine perfection and as providing the great exemplar by which the believer’s attitude and conduct are to be governed and the goal to which thought and life are to be oriented. The love and beneficence of God to the evil and unjust epitomize the norm of human perfection. It is obvious that this love and beneficence on the part of God are regarded by our Lord himself as not something incidental in God but as that which constitutes an element in the sum of divine perfection. This is made very specific in the parallel passage in Luke 6 :35,36 where we read, “And ye shall be sons of the Most High, because he is kind towards the unthankful and evil. Ye shall be merciful, as your Father is merciful.” This word translated “merciful” is redolent of the pity and compassion in the heart of God that overflow in the bestowments of kindness.