Charles Spurgeon on church membership:
I know there are some who say, “Well I have given myself to the Lord, but I do not intend to give myself to any church.”
Now, why not?
“Because I can be a Christian without it.”
Are you quite clear about that? You can be as good a Christian by disobedience to your Lord’s commands as by being obedient?
There is a brick. What is it made for? To help build a house. It is of no use for that brick to tell you that it is just as good a brick while it is kicking about on the ground as it would be in the house. It is a good-for-nothing brick. So you rolling-stone Christians, I do not believe that you are answering your purpose. You are living contrary to the life which Christ would have you live, and you are much to blame for the injury you do.
Hebrews 10:23-25 Let us hold fast the profession of our faith without wavering; (for he is faithful that promised;) (24) And let us consider one another to provoke unto love and to good works: (25) Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching.