Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you… – 2 Corinthians 6:17

Keep up a careful separateness from the works of darkness that are going on all around us. If it seems dark to you, gather up your skirts, and gird up your loins. The more sin abounds in the world, the more ought the Church of God to seek after the strictest holiness. If ever there was an age that wanted back again the sternest form of Puritanism, it is this age. If ever there was a time when we needed the old original stamp of Methodists, we need them now, a people separated unto God, a people that have nothing to do but to please God and to save souls, a people that will not in any way bow themselves to the fashions of the time. For my part, I would like to see a George Fox come back among us, ay, Quaker as he was, to bear such a testimony as he did bear in the power of the Spirit of God against the evils of his time. God make us to feel that now, in the dark, we cannot be even as lenient as we might have been in brighter days towards the sin that surrounds us! Are any of you tempted into “society” so-called, and into the ways of that society? Every now and then, those who read the papers get some little idea of what is going on in “society.” The stench that comes from “society” tells us what it must be like, and makes us wish to keep clear of it. The awful revelations that were once before made, which caused us to be sick with shame and sorrow, might be made again; for there is just the same foulness and filthiness beneath the surface of the supposed greater decency. O Christian people, if you could but know, as the most of you ought not to know, how bad this world is, you would not begin to talk about its wonderful improvements, or to question the doctrine of human depravity…Keep yourselves to your Lord, and hear you this voice sounding through the darkness, the voice of a wisdom that sees more than you see, “Come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you, and will be a Father unto you, and ye shall be my sons and daughters, said the Lord Almighty.” “Until the day break, and the shadows flee away,” lift your hands to heaven, and pledge yourselves to walk a separated pilgrim life, until He cometh before whose face heaven and earth shall flee away. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2477.cfm