1 Corinthians 15:9-11 ERV ( The Good News About Jesus Christ )
All the other apostles are greater than I am. I say this because I persecuted the church of God. That is why I am not even good enough to be called an apostle. 10 But, because of God’s grace, that is what I am. And his grace that he gave me was not wasted. I worked harder than all the other apostles. (But I was not really the one working. It was God’s grace that was with me.) 11 So then it is not important if I told you God’s message or if it was the other apostles who told you—we all tell people the same message, and this is what you believed.
Galatians 1:6-10 NKJV ( Only One Gospel )
I marvel that you are turning away so soon from Him who called you in the grace of Christ, to a different gospel, 7 which is not another; but there are some who trouble you and want to pervert the gospel of Christ. 8 But even if we, or an angel from heaven, preach any other gospel to you than what we have preached to you, let him be accursed. 9 As we have said before, so now I say again, if anyone preaches any other gospel to you than what you have received, let him be accursed.
10 For do I now persuade men, or God? Or do I seek to please men? For if I still pleased men, I would not be a bondservant of Christ.
Ephesians 4:1-6 NKJV ( Walk in Unity )
I, therefore, the prisoner of the Lord, beseech you to walk worthy of the calling with which you were called, 2 with all lowliness and gentleness, with longsuffering, bearing with one another in love, 3 endeavoring to keep the unity of the Spirit in the bond of peace. 4 There is one body and one Spirit, just as you were called in one hope of your calling; 5 one Lord, one faith, one baptism; 6 one God and Father of all, who is above all, and through all, and in you all.