The context of these two verses focuses on an offending person in the Church at Corinth and the fact that, as he has repented, the believers are bound to forgive him/her. Paul says he also forgives that person and he does it in the sight of Christ for the sake of the Body in order that satan might not outwit or get the advantage being fully aware of his schemes.
Saints, this is vital to us as believers. As you start this day off, forgive anyone who has offended you. Whether it be a family member, someone on the job, in the church or wherever, forgive that person. Go into this day free from any offense, bitterness, hurt, or anything else that a lack of forgiveness can produce in us. Be free from all of that and you do that by forgiving the person(s) who has wronged you. If you do not, satan will get the advantage and when he has the advantage, he will create even more havoc and destruction. Remember this, “The thief comes to steal, kill and destroy. Jesus has come that we may have abundant life (John 10:10)