Instead of quoting verses out of context, please read the entire passages: Mark 9:36-41, Luke 9:44-50, Matt 12:22-37.
You will see they are all on the same subject, the driving out of demons, and that in each case the argument is between theists. In the Matthew, theists from the Pharisee movement are told by Jesus that they blaspheme against the spirit of God and cannot be forgiven. It is because they are theists that he says whoever is not with me is against me, it is because they are theists that he says every kingdom divided against itself will be ruined.
Very good. Now you have just shown yourself quote mining to prove, perhaps without your even knowing it, that the vast kingdom of Protestantism, divided as it is, will be ruined.
“Neither pray I for these alone, but for them also which shall believe on me through their word, that they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us; that the world may believe that thou has sent me.” - John 17:20-21
“Other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one flock, one shepherd.” (John 10:16).
“I therefore, the prisoner in the Lord, beseech you to walk worthily of the calling wherewith you were called, with all lowliness and meekness, with long suffering, forbearing one another in love; giving diligence to keep the unity of the Spirit in the bond of peace. There is one body, and one Spirit, even as ye are called in one hope of your calling; one Lord, one Faith, one baptism, one God and Father of all, who is over all, and through all, and in all” Saint Paul (Ephesians 4:2-6).
You are chronically tempted to use the Catechism, a document you do not believe in, to defeat Catholics in this forum. Are you never going to learn that this is about as absurd a policy as you could ever follow when debating Catholics?