Remember therefore from where you have fallen; repent and do the first works… – Revelation 2:5

Every member of a church who is living in secret sin, who is tolerating in his heart any thing that he knows to be wrong, who is not seeking eagerly his own personal sanctification, is to that extent hindering the work of the Spirit of God. “Be ye clean that bear the vessels of the Lord,” for to the extent that we maintain known unholiness, we restrain the Spirit. He cannot work by us as long as any conscious sin is tolerated. It is not over breaking of commandments that I am now speaking of, brethren, but I include worldliness also-a care for carnal things, and a carelessness about spiritual things, having enough grace just to make us hope that you are a Christian, but not enough to prove you are; bearing a shriveled apple here and there on the topmost bough, but not much fruit; this I mean, this partial barrenness, not complete enough to condemn, yet complete enough to restrain the blessing, this robs the treasure of the church, and hinders her progress. O brethren, if any of you are thus described, repent and do your first works; and God help you to be foremost in proportion as you have been behind.

Anybody who calls off the thoughts of the church from soul-saving is a mischief maker. I have heard it said of a minister, “He greatly influences the politics of the town.” Well, it is a very doubtful good in my mind, a very doubtful good indeed. If the man, keeping to his own calling of preaching the gospel, happens to influence these meaner things, it is well, but any Christian minister who thinks that he can do two things well, is mistaken. Let him mind soul-winning, and not turn a Christian church into a political club. Let us fight out our politics somewhere else, but not inside the church of God. There our one business is soul-winning, our one banner is the cross, our one leader is the crucified King. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1009.cfm