Beware of the Wolf
Christians should guard against wolves. Not of the furry kind; they no longer present much danger. But of the kind that claim to be Christians, even spiritual Christians.
Someone is a wolf who:
Never builds up the local church, but damages it.
Finds fault with the local church, but never offers to mend it.
Does not attend a local church, thus offering accountability to no-one.
Obsesses with spiritual hobby horses whilst neglecting the basic gospel.
Paul writes to the Romans:
17 Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them.18 For they that are such serve not our Lord Jesus Christ, but their own belly; and by good words and fair speeches deceive the hearts of the simple.19 For your obedience is come abroad unto all men. I am glad therefore on your behalf: but yet I would have you wise unto that which is good, and simple concerning evil.20 And the God of peace shall bruise Satan under your feet shortly. The grace of our Lord Jesus Christ be with you. Amen.