Matthew 18:23-35 tells us how the unforgiving person is turned over into the hands of tormenters (that is, tormenting spirits). If we are unforgiving towards ourself, we open that door for tormenting spirits to come against us because we are not really accepting the work that Christ did for us on the cross. Another key to the demonic is bitterness, and when we become bitter with ourselves, we become defiled spiritually:
Hebrews 12:15, “Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled.”
God’s Word tells us that Jesus purged (that is, removed) our sin (Hebrews 1:3, “…when he had by himself purged our sins…”), but if we fail to forgive ourselves, we are in essence, calling God’s Word a liar! We are saying, “I hate myself because I did that sin… I won’t forgive myself of it!” when God’s Word tells us that the sin has been PURGED or REMOVED from us… who are we to say that it is still part of our past? We are in essence, calling God’s Word a LIE!
I can’t tell you how important it is to realize that when the recipient of a gift (you and I) receives a gift (of Jesus’ shed blood for the forgiveness of our sins) with joy and enjoys it to the fullness, the giver of that gift (that is Jesus) is glorified! Failing to forgive ourselves is denying or rejecting the gift of God and brings no glory (actually dishonor and humiliation) to what Jesus did for us.
What Hebrews chapter 10 has to say…
Hebrews 10:1-22, “For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect. For then would they not have ceased to be offered? because that the worshipers once purged should have had no more conscience of sins. But in those sacrifices there is a remembrance again made of sins every year. For it is not possible that the blood of bulls and of goats should take away sins.Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, but a body hast thou prepared me: In burnt offerings and sacrifices for sin thou hast had no pleasure. Then said I, Lo, I come (in the volume of the book it is written of me,) to do thy will, O God. Above when he said, Sacrifice and offering and burnt offerings and offering for sin thou wouldest not, neither hadst pleasure therein; which are offered by the law; Then said he, Lo, I come to do thy will, O God. He taketh away the first, that he may establish the second. By the which will we are sanctified through the offering of the body of Jesus Christ once for all. And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins: But this man, after he had offered one sacrifice for sins forever, sat down on the right hand of God; From henceforth expecting till his enemies be made his footstool. For by one offering he hath perfected forever them that are sanctified. Whereof the Holy Ghost also is a witness to us: for after that he had said before, This is the covenant that I will make with them after those days, saith the Lord, I will put my laws into their hearts, and in their minds will I write them; And their sins and iniquities will I remember no more. Now where remission of these is, there is no more offering for sin. Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus, By a new and living way, which he hath consecrated for us, through the veil, that is to say, his flesh; And having a high priest over the house of God; Let us draw near with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience, and our bodies washed with pure water.”