He that says he abides in him ought himself also so to walk, even as he walked.
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Augustine of Hippo
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, says, Be therefore perfect, as your Heavenly Father is perfect. Matthew 5:48 He, therefore, that says he abides in Him, ought himself also so to walk, even as He walked. 1 John 2:6 How, brethren? What does he advise us? He that says he abides 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, you have learned to pray for your enemy, you walk in the way of the Lord.
He that saith he abide in Him ought himself also so to walk, even as He walked. By advancing in virtue, especially in charity, and exhibiting its works more and more every day, as Christ "increased in wisdom and stature." "The true righteousness of the perfect," says S. Leo (Serm. ii. de Quadr.), "is for them never to presume that they are perfect, lest by stopping short when their journey is not yet done, they should incur the risk of failing." See Eph. v1. S. Prosper (de vit. contempl. lib11) beautifully says, "What is walking as He walked, except the despising all the good things which He despised, not to fear the sufferings He endured, to teach what He taught, to hope for what He promised, to confer kindnesses on the ungrateful, not to requite to evil-wishers according to their deserts, to pray for our enemies, to pity the perverse, patiently to bear with the crafty and proud, and, as the Apostle says, to die to the flesh that we may live to Christ?" &c.
Whence Gregory Nyssen defi...
For this is to wish to be found with Christ, to imitate that which Christ both taught and did, according to the Apostle John, who said, "He that saith he abideth in Christ, ought himself also so to walk even as He walked.".
It is written, and it is read and heard, and is celebrated for our example by the Church's mouth, "He that saith he abideth in Christ. ought himself also so to walk even as He walked.".
But if we also, beloved brethren, are in Christ; if we put Him on, if He is the way of our salvation, who follow Christ in the footsteps of salvation, let us walk by the example of Christ, as the Apostle John instructs us, saying, "He who saith he abideth in Christ, ought himself also to walk even as He walked.".
Of this same thing in the Epistle of John: "He who saith he abideth in Christ, ought himself also to walk even as He walked."
When, however, he turns their minds back to continence, ("But I will you all so to be") "I think, moreover "he says, "I too have the Spirit of God; "in order that, if he had granted any indulgence out of necessity, that, by the Holy Spirit's authority, he might recall. But John, too, when advising us that "we ought so to walk as the Lord withal did"