“If you love Me, keep My commandments. – John 14:15

We must not talk about our fellowship with Christ, or our being separated from the world unto Him, unless we make Him our Master and Lord in everything. Some public teachers are not true at all points to their convictions, and how can they look for a blessing? A Christian man, anxious to be useful, ought to be very particular as to every point of obedience to his Master. I have no doubt whatever that God blesses our churches even when they are very faulty, for His mercy endureth for ever. When there is a measure of error in the teaching, and a measure of mistake in the practice, He may still vouchsafe to use the ministry, for He is very gracious. But a large measure of blessing must necessarily be withheld from all teaching which is knowingly or glaringly faulty. God can set His seal upon the truth that is in it, but He cannot set His seal upon the error that is in it.

The Lord is very gracious and pitiful; but yet He is a jealous God. He is sometimes sternly jealous towards His people who are living in neglects of known duty, or in associations which are not clean in His sight. He will wither their work, weaken their strength, and humble them until at last they say, “My Lord, I will take Thy way after all. I will do what Thou biddest me to do, for else Thou wilt not accept me.” The Lord said to His disciples, “Go ye into all the world, and preach the gospel to every creature: he that believeth and is baptized shall be saved;” and He promised them that signs should follow, and so they did follow them, and so they will. But we must get back to apostolic practice and to apostolic teaching: we must lay aside the commandments of men and the whimseys of our own brains, and we must do what Christ tells us, as Christ tells us, and because Christ tells us. Definitely and distinctly, we must take the place of servants; and if we will not do that, we cannot expect our Lord to work with us and by us. Let us be determined that, as true as the needle is to the pole, so true will we be, as far as our light goes, to the command of our Lord and Master. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1906.cfm