Oh, that I were as in months past, as in the days when God preserved me… – Job 29:2

Are there not many among us who once walked humbly with God, and near to Him, who have fallen into carnal security? Have we not taken it for granted that all is well with us, and are we not settled upon our lees like Moab of old? How little of heart-searching and self-examination are practiced now-a-days! How little enquiry as to whether the root of the matter is really in us! Woe unto those who take their safety for granted, and sit down in God’s house and say, “The temple of the Lord, the temple of the Lord are we.” Woe unto them that are at ease in Zion. Of all enemies, one of the most to be dreaded is presumption. To be secure in a Christ is a blessing, to be secure in ourselves is a curse. Where carnal security reigns, the Spirit of God withdraws. He is with the humble and contrite, but He is not with the proud and self-sufficient. My brethren, are we all clear in this respect? Do not many of God’s people also need to bemoan their worldliness? Once Christ was all with you, brethren; is it so now? Once you despised the world, and contemned alike its pleasures and its frowns; but now, my brethren, are not the chains of worldly custom upon you? Are not many of you enslaved by fashion, and eaten up with frivolity? Do you not, some of you, run as greedily as worldlings after the questionable enjoyments of this present life? Ought these things to be so? Can they remain so, and your souls enjoy the Lord’s smile? “Ye cannot serve God and mammon.” “If any man loves the world, the love of the Father is not in him.” You cannot be Christ’s disciples and be in fellowship with the ungodly. Come ye out from among them; be ye separate; touch not the unclean thing; then shall ye know right joyfully that the Lord is Father to you, and that you are His sons and daughters. But, brethren, have ye gone unto Jesus without the camp, and do ye abide there with Him? Is the line of your separation visible-ay, is it existing? Is there any separation at all? Is it not often the case that the professed people of God are mixed up with the sons of men so that you cannot discern the one from the other? If it be so with any one of us, let him humble himself, and let him cry in bitterness, “Oh that I were as in months past.” ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1011.cfm