9. “And in this,” saith he, “we do know Him, if we keep His commandments.” What commandments? “He that saith, I know Him, and keepeth not His commandments, is a liar, and the truth is not in him.” But still thou askest, What commandments? “But whoso,” saith he, “keepeth His word, in him verily is the love of God perfected.” Let us see whether this same commandment be not called love. For we were asking, what commandments, and he saith, “But whoso keepeth His word, in him verily is the love of God perfected.” Mark the Gospel, whether this be not the commandment: “A new commandment,” saith the Lord, “give I unto you, that ye love one another.—In this we know that we are in Him, if in Him we be perfected.” Perfected in love, he calls them: what is perfection of love? To love even enemies, and love them for this end, that they may be brethren. For not a carnal love ought ours to be. To wish a man temporal weal, is good; but though that fail, let the soul be safe. Dost thou wish life to any that is thy friend? Thou doest well. Dost thou rejoice at the death of thine enemy? Thou doest ill. But haply both to thy friend the life thou wishest him is not for his good, and to thine enemy the death thou rejoicest at hath been for his good. It is uncertain whether this present life be profitable to any man or unprofitable: but the life which is with God without doubt is profitable. So love thine enemies as to wish them to become thy brethren; so love thine enemies as that they may be called into thy fellowship. For so loved He who, hanging on the cross, said, “Father, forgive them, for they know not what they do.” For he did not say, Father let them live long, me indeed they kill, but let them live. He was casting out from them the death which is for ever and ever, by His most merciful prayer, and by His most surpassing might. Many of them believed, and the shedding of the blood of Christ was forgiven them. At first they shed it while they raged; now they drank it while they believed. “In this we know that we are in Him, if in Him we be made perfect.” Touching the very perfection of love of enemies, the Lord admonishing, saith, “Be ye therefore perfect, as your Heavenly Father is perfect. He,” therefore, “that saith he abideth in Him, ought himself also so to walk, even as He walked.” How, brethren? what doth he advise us? “He that saith he abideth in Him,” i.e., in Christ, “ought himself also so to walk even as He walked.” Haply the advice is this, that we should walk on the sea? That be far from us! It is this then, that we walk in the way of righteousness. In what way? I have already mentioned it. He was fixed upon the cross, and yet was He walking in this very way: this way is the way of charity, “Father, forgive them, for they know not what they do.” If, therefore, thou have learned to pray for thine enemy, thou walkest in the way of the Lord.