Therefore, accept one another, just as Christ also accepted us to the glory of God.
Romans 15:7
Context. “Now the God of patience and consolation grant you to be likeminded one toward another according to Christ Jesus: That ye may with one mind and one mouth glorify God, even the Father of our Lord Jesus Christ. “ (Romans 15:5-6)
Rather than a body without bones (doctrine), which accepts fellowships with whoever claims to be a brother - though initially this may be expected to a degree - the context of real fellowship is according to the doctrine of Godliness. Which actually requires disfellowshipping impenitent and practitioners of known willful sin.
“But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat. “ (1 Corinthians 5:11) ,
As well as heretical deviations.
“Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them. “ (Romans 16:17)
Your reference is to that who ARE Christians not to those who lay claim to being a Christian....even in Chrit’s day there were those who used Chrit’s name and yet were not of them..so you’ve taken that scripture out of context...read further back and get a grasp of the context....and who Jesus was speaking to.