2:29 {27} If ye know that he is righteous, ye know that every one that doeth righteousness is born of him.
(27) A passing over to the treatise following, which tends to the same purpose, but yet is more ample, and handles the same matter in another way, for before he taught us to go from the effects to the cause, and in this that follows, he goes from the causes to the effects. This is the sum of the argument, God is the fountain of all righteousness, and therefore they that give themselves to righteousness, are known to be born of him, because they resemble God the Father.
2:29 If ye know that he is righteous. A life of righteousness shows that we have the life of Christ, and hence is proof that we have been born of him.
2:29 Every one - And none else. Who practiseth righteousness - From a believing, loving heart. Is born of him - For all his children are like himself.
2:24-29 The truth of Christ, abiding in us, is a means to sever from sin, and unites us to the Son of God, Joh 15:3,4. What value should we put upon gospel truth! Thereby the promise of eternal life is made sure. The promise God makes, is suitable to his own greatness, power, and goodness; it is eternal life. The Spirit of truth will not lie; and he teaches all things in the present dispensation, all things necessary to our knowledge of God in Christ, and their glory in the gospel. The apostle repeats the kind words, little children; which denotes his affection. He would persuade by love. Gospel privileges oblige to gospel duties; and those anointed by the Lord Jesus abide with him. The new spiritual nature is from the Lord Christ. He that is constant to the practice of religion in trying times, shows that he is born from above, from the Lord Christ. Then, let us beware of holding the truth in unrighteousness, remembering that those only are born of God, who bear his holy image, and walk in his most righteous ways.