1John 5:10 He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son.
He that believeth on the Son of God hath the witness in himself. So in order to have the testimony of God in yourself, which is the Father, the Word and the Holy Ghost, the water, the blood and the spirit, then you must believe that Jesus is the Son of God. See, it must rest on this one belief, that Jesus is the Son of God. So this really narrows it down to very few who really have this witness in himself. Why? Because almost everyone believes that Jesus is God.
They either believe that Jesus is God and all there is to God, or they believe that Jesus is a second person, but that this second person is also God. So they are NOT believing that Jesus is the Son of God. Sure, they will claim that they believe this. But then listen to them, and you will hear them confess that they believe that Jesus is God. But notice, God did not say those that believe that Jesus is God, either all there is to God, or a third of God, Second person of God, but still God, these have the witness in himself. See, God did not say that.
So in all honesty, the entire church world believes that Jesus is God. So this makes them in unbelief, for they believe not the testimony God gave of his Son. So they do not have the witness in themselves, for they are not qualified. They did not believe what God said about his Son. It gets even more serious. Watch:
He that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son. Now this says that unless you believe this record that God gave of HIS SON, you make God a liar. So if you claim that Jesus is God, you are calling God a liar. So where does this leave almost everyone? Calling God a liar. You are saying that your words are truth and God’s word is a lie. And most people think this is not important? That has to be deception from Satan.