Do you ever doubt your Salvation. I am not talking of "doubting" God, but do you ever doubt yourself, that you are what you believe you are. The inward man is what has been born again and the outward is crucified and kept under subjection, but has to wait until the resurrection to receive its change. So, what knowledge we have, has to be the part of us that has already been changed from a dead state of sin, and made alive in Jesus Christ, raised to walk a newness of life. The Apostles doubted: Mat 26:21 And as they did eat, he said, Verily I say unto you, that one of you shall betray me Mat 26:22 And they were exceeding sorrowful, and began every one of them to say unto him, Lord, is it I? They all doubted themselves, are we any better? Romans 8: 24: For we are saved by hope: but hope that is seen is not hope: for what a man seeth, why doth he yet hope for? 25: But if we hope for that we see not, then do we with patience wait for it. So Paul says we are saved by Hope, so what is Hope. Hbr 11:1 ¶ Now faith is the substance of things hoped for, the evidence of things not seen. We find in Hbr 11:1 that Hope is "faith" and if you do not have "Hope", then you do not have faith. Also, if you have "complete knowledge" without any doubt ever, then faith would be made void and if faith is made void, then so is Hope. In order for there to be faith, there must be some doubt in the outward or fleshly man who has not received the change yet, for if a man seeth (or knoweth) "my empahsis", why doth he yet hope for. If you have no doubt ever, then I can’t see how you could have faith and without faith you cannot please God. Even Paul said: 2Cr 13:5 Examine yourselves, whether ye be in the faith; prove your own selves. Know ye not your own selves, how that Jesus Christ is in you, except ye be reprobates? Now to the knowing scripture. Rom 8:16 The Spirit itself beareth witness with our spirit, that we are the children of God: (but if you look closely, it is the spirit to our spirit, which is inwardly. Not the flesh. 1Jo 5:13 These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God. Even in 1 John, it is talking to the part of man that has already been changed, not the flesh. IMO There are many scripture that can be read to be both ways, until we examine them closely. I will leave these and the rest of the scripture up to your comments.