Verse 10. - Hath the witness in him. This rendering is to be preferred to either "in Him," i.e., God, or" in himself." The former is obscure in meaning; the latter, though probably correct as an interpretation, is inaccurate as a translation, for the better reading is αὐτῷ, not ἑαυτῷ. But ἐν αὐτῷ may be reflexive. The believer in the Incarnation has the Divine testimony in his heart, and it abides with him as an additional source of evidence, supplementing and confirming the external evidence. In its daily experience, the soul finds ever fresh proof that the declaration, "This is my beloved Son," is true. But even without this internal corroboration, the external evidence suffices, and he who rejects it makes God a liar; for it is God who presents the evidence, and presents it as sufficient and true. The second half of the verse is parenthetical, to show that the unbeliever, though be has no witness in himself, is not therefore excused. In verse 11 we return to the main proposition at the beginning of verse 10.

5:9-12 Nothing can be more absurd than the conduct of those who doubt as to the truth of Christianity, while in the common affairs of life they do not hesitate to proceed on human testimony, and would deem any one out of his senses who declined to do so. The real Christian has seen his guilt and misery, and his need of such a Saviour. He has seen the suitableness of such a Saviour to all his spiritual wants and circumstances. He has found and felt the power of the word and doctrine of Christ, humbling, healing, quickening, and comforting his soul. He has a new disposition, and new delights, and is not the man that he formerly was. Yet he finds still a conflict with himself, with sin, with the flesh, the world, and wicked powers. But he finds such strength from faith in Christ, that he can overcome the world, and travel on towards a better. Such assurance has the gospel believer: he has a witness in himself, which puts the matter out of doubt with him, except in hours of darkness or conflict; but he cannot be argued out of his belief in the leading truths of the gospel. Here is what makes the unbeliever's sin so awful; the sin of unbelief. He gives God the lie; because he believes not the record that God gave of his Son. It is in vain for a man to plead that he believes the testimony of God in other things, while he rejects it in this. He that refuses to trust and honour Christ as the Son of God, who disdains to submit to his teaching as Prophet, to rely on his atonement and intercession as High Priest, or to obey him as King, is dead in sin, under condemnation; nor will any outward morality, learning, forms, notions, or confidences avail him.He that believeth on the Son of God,.... As a divine person who came in the flesh, and obeyed the law, and brought in everlasting righteousness, and obtained life and salvation for men: he that with the heart believes in him for righteousness, and eternal life, he being the Son of God, truly and properly God, and so able to save all that believe in him,

hath the witness in himself; of the need he stands in of Christ, and of the suitableness, fulness, and excellency of him; the Spirit of God enlightening him into the impurity of his nature, his impotence to do anything spiritually good, his incapacity to atone for sin, and the insufficiency of his righteousness to justify him before God; and convincing him that nothing but the blood of the Son of God can cleanse him from sin, and only his sacrifice can expiate it, and his righteousness justify him from it, and that without him he can do nothing; testifying also to the efficacy of his blood, the completeness of his sacrifice and satisfaction, the excellency of his righteousness, and the energy of his grace and strength: so he comes to have such a witness in himself, that if ten thousand arguments were ever so artfully formed, in favour of the purity of human nature, the power of man's free will, and the sufficiency of his righteousness, and against the sacrifice and righteousness of Christ, the dignity of his person, as the Son of God, which gives virtue to his blood, sacrifice, and righteousness, they would all signify nothing to him, he would be proof against them. And such an one very readily receives into him the testimony God gives of his Son, of the glory and excellency of his person, and retains it in him. The Alexandrian copy and the Vulgate Latin version read, "hath the witness of God in him"; to which the Ethiopic, version agrees, and confirm the last observation:

he that believeth not God; does not receive his testimony concerning his Son: the Alexandrian copy, and two of Stephens's, and the Vulgate Latin version read, "he that believeth not the Son"; and the Ethiopic version, his Son; and the Arabic version, "the Son of God"; and so is a direct antithesis to the phrase in the former clause of the verse:

hath made him a liar; not the Son, but God, as the Arabic version renders it, "hath made God himself a liar"; who is the God, of truth, and cannot lie; it is impossible he should; and as nothing can be, more contumelious and reproachful to the being and nature of God, so nothing can more fully expose and aggravate the sin of unbelief, with respect to Christ, as the Son of God:

because he believeth not the record that God gave of his Son; at the times and places before observed.