“He maketh peace in thy borders, and filleth thee with the finest of the wheat. He sendeth forth His commandment upon earth: His word runneth very swiftly.”-Psalm 147:14.-15.

A Church can never be in a sound and satisfactory state for labor, she never can be in such a condition that God can smile upon her complacently, if she be mixed up with the world, if her sons and daughters be not sufficiently distinguished from the world to be manifestly God’s people…If we take into our churches those who are not converted, we swell our numbers, but we diminish our real strength. We might need to purchase a larger church-book, we might, perhaps, be able to parade our numbers before the world, and we might even flatter ourselves with our apparent prosperity till we intoxicate our own brain, but we should be going backward when we think we are going forward. We have not conquered the world; we have only yielded to it. We have not brought the world up to us, we have only brought ourselves down to it. We have not Christianized an ungodly generation, but we have adulterated Christianity. We have brought the chaste spouse of Christ to commit fornication among the people…If we could to-morrow bring into the Church a sufficient number of ungodly but moral men to double our numbers, to double our subscriptions, to double our places of worship, to enable us to double the number of our missionaries, we should, by succumbing to the temptation, procure a curse instead of a blessing. In our purity, and in our purity alone, we stand…Oh! that God might grant to each of us, who are the pastors of the Church, that unceasing vigilance and constant watchfulness whereby we shall be able to detect the wolves in sheep’s clothing, and whereby we shall be able to say calmly, sternly, yet lovingly, to those who come before us seeking communion, without satisfactory evident that they belong to the living family of God, “You must go your way until the Spirit of God hath touched your heart, for until you have received the living faith in Jesus, we cannot receive you into the number of His faithful ones.” ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0314.cfm